Research has revealed that, regardless of the animal's size or the volume being excreted, most mammals take roughly the same amount of time - about 21 seconds - to urinate. Believe me, you've just become the most interesting person at the party. You're welcome.
Just think about that: a cat excretes about 1 teaspoon of urine in roughly the same amount of time as an elephant empties its 18 L (~5 gal) bladder! How does this happen? It's all in the urethra.
Saturday, December 20, 2014
Sunday, December 14, 2014
Science This Week (Dec 8-14, 2014)
Medicine
A special feature on the promises and perils of e-cigarettes.
Poor semen quality is often indicative of other, seemingly unrelated health problems.
Flora/Fauna
Chicken genomes have undergone the least amount of change since evolving from dinosaurs.
The genes involved in birdsong are strikingly similar to the ones involved in human speech.
And how birds get by without external ears. (Open Access)
The story of the deep-sea bone worm has taken a strange turn: evolutionary reversal never before seen in the animal kingdom!
Dragonflies on the hunt display a complex choreography.
Environment
Scientists estimate that there are over 250 000 tons of plastic in the oceans. (Open Access)
How climate change will affect ectotherms.
Australia's shark policies have been hugely influenced by movie myths. (Open Access)
Poppies are fading from Flanders fields as Europe's plant biodiversity changes.
And a win! The critically endangered hawksbill sea turtle is making a comeback!
Awesome!
We may be living in a computer simulation - and there's math to prove it.
Deciphering the "loopome."
You are not what you think you are:
A special feature on the promises and perils of e-cigarettes.
Poor semen quality is often indicative of other, seemingly unrelated health problems.
Flora/Fauna
Chicken genomes have undergone the least amount of change since evolving from dinosaurs.
The genes involved in birdsong are strikingly similar to the ones involved in human speech.
And how birds get by without external ears. (Open Access)
The story of the deep-sea bone worm has taken a strange turn: evolutionary reversal never before seen in the animal kingdom!
Dragonflies on the hunt display a complex choreography.
Environment
Scientists estimate that there are over 250 000 tons of plastic in the oceans. (Open Access)
How climate change will affect ectotherms.
Australia's shark policies have been hugely influenced by movie myths. (Open Access)
Poppies are fading from Flanders fields as Europe's plant biodiversity changes.
And a win! The critically endangered hawksbill sea turtle is making a comeback!
Awesome!
We may be living in a computer simulation - and there's math to prove it.
Deciphering the "loopome."
You are not what you think you are:
Sunday, December 7, 2014
Science This Week (Dec 1-7, 2014)
Medicine
HIV appears to be evolving into a less infectious and deadly virus.
A new health and social care journal will encourage public and patient involvement in research!
Biological explanations for mental illness make doctors less empathetic.
Dopamine makes you happy and helps you understand math.
A newly discovered, fast-acting malaria drug looks really promising.
Pre-malignant state can now be detected in blood, providing a diagnostic tool for blood cancers.
Why females live longer than males.
Flora/Fauna
Different species - from mice to fish to bees - share the same "genetic toolkit" guiding their behavior.
Birds conform to local culture.
Tool-wielding crows are left or right beaked.
Humpback whales in the Arabian sea have been isolated for 70,000 years, making them the most genetically distinct humpback whales in the world. (Open Access)
Electric eels: nature's tasers.
Lasers have been developed to determine peak fruit ripeness.
Environment
A worm's gut bacteria is able to degrade plastics!
Turns out, you can hear coral reefs dying.
Anti-inflammatory drugs in the environment affect plant growth.
Awesome!
Italy's first female astronaut, Samantha Cristoforetti, is now up at the ISS!
What does Nature's new free-to-view program do for Open Access?
Why 10% of the population hates cilantro (weirdos).
And a pretty interesting video about what it would look like if the Earth was flat.
HIV appears to be evolving into a less infectious and deadly virus.
A new health and social care journal will encourage public and patient involvement in research!
Biological explanations for mental illness make doctors less empathetic.
Dopamine makes you happy and helps you understand math.
A newly discovered, fast-acting malaria drug looks really promising.
Pre-malignant state can now be detected in blood, providing a diagnostic tool for blood cancers.
Why females live longer than males.
Flora/Fauna
Different species - from mice to fish to bees - share the same "genetic toolkit" guiding their behavior.
Birds conform to local culture.
Tool-wielding crows are left or right beaked.
Humpback whales in the Arabian sea have been isolated for 70,000 years, making them the most genetically distinct humpback whales in the world. (Open Access)
Electric eels: nature's tasers.
Lasers have been developed to determine peak fruit ripeness.
Environment
A worm's gut bacteria is able to degrade plastics!
Turns out, you can hear coral reefs dying.
Anti-inflammatory drugs in the environment affect plant growth.
Awesome!
Italy's first female astronaut, Samantha Cristoforetti, is now up at the ISS!
What does Nature's new free-to-view program do for Open Access?
Why 10% of the population hates cilantro (weirdos).
And a pretty interesting video about what it would look like if the Earth was flat.
Saturday, December 6, 2014
Twenty-Five Years Later
Today is the 25th anniversary of the Montreal Massacre, where 14 women were killed at the École Polythechnique, and 14 more were injured. These women were executed for the crime of trying to be engineers while also being women.
On December 6th, 1989, a 25-year-old man grabbed a hunting rifle, walked into the school that had rejected him, into an engineering class. He told the men to walk out, and opened fire on the women. Before killing himself, he said his motivation was to fight feminism. He was angry at what he saw as women usurping his rightful position by studying engineering while he was not. Sound familiar?
Unfortunately, not much has changed in the last 25 years, for women as a whole, and for women in STEM. The massacre prompted the creation of a long-gun registry in Canada, which required the registration of all restricted and prohibited firearms in Canada, and which was scrapped by Harper in 2012, despite MAJOR backlash. In that move, our government failed Canadian women, and forgot these 14 women in particular. There are over 1500 missing and murdered aboriginal women in Canada, which our government refuses to do anything about!
As for women in STEM, you may remember a piece I wrote a few months on my experiences as a woman in science. In it, I cited study after study demonstrating the discrimination against women in science. My female colleagues (including some from other universities who read this article, not just women I know) echoed my sentiments in the article. Men told me I needed to use non-feminist references if I wanted it to be taken seriously.
The problem is that the murder of these 14 women is personal to so many of us. We know that we occupy the same spaces as these women, spaces that are seen and enforced as male. That enforcement may be as simple as exclusion and discrimination, but there are people out there who are willing to assault and kill to maintain those male spaces. The response to Shirt Gate, in which a woman called out Matt Taylor for his incredibly inappropriate shirt during the comet landing broadcast, is just an example of the type of backlash women get for wanting to occupy male spaces. The women of Twitter (myself included) who used this shirt as an opportunity to show people just how exclusive science is to women were silenced, ridiculed, and threatened. So tell me, have we really come a long way?
Janet Stemweld over at Scientific American wrote a great piece on the Montreal Massacre as well. She says something at the end that really resonated with me, and so I'll leave it here for you:
I hope today that people will listen to women when we speak about our experiences in STEM, rather than argue that they are imagined. Yes, the discrimination we face is small in comparison to what these 28 women faced, I understand that. These women died for studying engineering. They died because someone wanted to take them down a peg. The exclusion of women in science, the discrimination, is one step away from threats - just as it is in society - and two steps away from violence.
So what is the legacy left by the Montreal Massacre?
On December 6th, 1989, a 25-year-old man grabbed a hunting rifle, walked into the school that had rejected him, into an engineering class. He told the men to walk out, and opened fire on the women. Before killing himself, he said his motivation was to fight feminism. He was angry at what he saw as women usurping his rightful position by studying engineering while he was not. Sound familiar?
Unfortunately, not much has changed in the last 25 years, for women as a whole, and for women in STEM. The massacre prompted the creation of a long-gun registry in Canada, which required the registration of all restricted and prohibited firearms in Canada, and which was scrapped by Harper in 2012, despite MAJOR backlash. In that move, our government failed Canadian women, and forgot these 14 women in particular. There are over 1500 missing and murdered aboriginal women in Canada, which our government refuses to do anything about!
As for women in STEM, you may remember a piece I wrote a few months on my experiences as a woman in science. In it, I cited study after study demonstrating the discrimination against women in science. My female colleagues (including some from other universities who read this article, not just women I know) echoed my sentiments in the article. Men told me I needed to use non-feminist references if I wanted it to be taken seriously.
The problem is that the murder of these 14 women is personal to so many of us. We know that we occupy the same spaces as these women, spaces that are seen and enforced as male. That enforcement may be as simple as exclusion and discrimination, but there are people out there who are willing to assault and kill to maintain those male spaces. The response to Shirt Gate, in which a woman called out Matt Taylor for his incredibly inappropriate shirt during the comet landing broadcast, is just an example of the type of backlash women get for wanting to occupy male spaces. The women of Twitter (myself included) who used this shirt as an opportunity to show people just how exclusive science is to women were silenced, ridiculed, and threatened. So tell me, have we really come a long way?
Janet Stemweld over at Scientific American wrote a great piece on the Montreal Massacre as well. She says something at the end that really resonated with me, and so I'll leave it here for you:
I hope today that people will listen to women when we speak about our experiences in STEM, rather than argue that they are imagined. Yes, the discrimination we face is small in comparison to what these 28 women faced, I understand that. These women died for studying engineering. They died because someone wanted to take them down a peg. The exclusion of women in science, the discrimination, is one step away from threats - just as it is in society - and two steps away from violence.
So what is the legacy left by the Montreal Massacre?
Sunday, November 30, 2014
Science This Week (Nov 24-30, 2014)
Medicine
A cholesterol transporter previously thought to be essential for life actually isn't that essential.
Watch: burns surgeon Fiona Wood, inventor of spray-on-skin, on why average isn't good enough in science
The gut microbiota influences the integrity of the blood-brain barrier.
A promising Ebola vaccine has been developed.
Pain "off-switch" has been found. (Open Access)
And not new but recently found: cocaine causes epigenomic changes in the brain (Open Access)
Flora/Fauna
The turtle tree of life shows that turtles' closest relatives are birds, crocodiles, and dinosaurs! (Open Access)
Dogs understand what we say and how we say it.
Centipede genome sequencing provides clues into how life developed on Earth. (Open Access)
Environment
Scientists can now turn sawdust into the building blocks of gasoline.
Melting sea ice is predicted to impact polar bears (starvation and failed reproduction) by the end of the 21st century. (Open Access)
Endangered hammerhead sharks are now migrating into unprotected waters. (Open Access)
Awesome!
DNA survives a flight into space and back. (Open Access)
A cholesterol transporter previously thought to be essential for life actually isn't that essential.
Watch: burns surgeon Fiona Wood, inventor of spray-on-skin, on why average isn't good enough in science
The gut microbiota influences the integrity of the blood-brain barrier.
A promising Ebola vaccine has been developed.
Pain "off-switch" has been found. (Open Access)
And not new but recently found: cocaine causes epigenomic changes in the brain (Open Access)
Flora/Fauna
The turtle tree of life shows that turtles' closest relatives are birds, crocodiles, and dinosaurs! (Open Access)
Dogs understand what we say and how we say it.
Centipede genome sequencing provides clues into how life developed on Earth. (Open Access)
Environment
Scientists can now turn sawdust into the building blocks of gasoline.
Melting sea ice is predicted to impact polar bears (starvation and failed reproduction) by the end of the 21st century. (Open Access)
Endangered hammerhead sharks are now migrating into unprotected waters. (Open Access)
Awesome!
DNA survives a flight into space and back. (Open Access)
Thursday, November 27, 2014
Genomics: the Power and the Promise 2014 - day 3 recap
Genomics: the Power and the Promise has wrapped up, and what an amazing conference! A superstar lineup of presenters working on cutting-edge research with huge policy implications? Yes please! Throw in amazing interactive panels and Jay Ingram as the MC, there's a recipe for awesome!
I had to take a brain break yesterday, but you can find my day 3 highlights after the jump:
Tuesday, November 25, 2014
Genomics: the Power and the Promise 2014 - Conference Day 2 Recap
With day 2 of the Genome Canada conference winding down, we had some fantastic discussions on the environmental impacts of human health, and how to use genomics to improve the health and adaptation of (and to) our ecosystems.
The highlights of day 2 are after the jump:
The highlights of day 2 are after the jump:
Monday, November 24, 2014
Genomics: the Power and the Promise 2014 - Conference Day 1 Recap
This week, Genome Canada and the Gairdner Foundation are hosting their Genomics: the Power & the Promise event. This year's theme is Genomics and the Environment, in which speakers, panelists, and attendees are exploring the applications of genomics in both human and environmental health. Today, the conference was kicked off by MC Jay Ingram (of Daily Planet fame), with an introduction from Genome Canada CEO Pierre Meulien, and Gairdner Foundation CEO John Dirks. The conference boasts a highly varied audience, with folks from government, industry, and academia, as well as policy makers and various interest groups.
Day 1 focused on genomic medicine. Highlights after the jump:
Day 1 focused on genomic medicine. Highlights after the jump:
Sunday, November 23, 2014
Science This Week (Nov 17-23, 2014)
The science behind believing in conspiracy theories.
Darwin 2.0: the new theory of speciation and diversity.
Scientists have found the cells that are responsible for memory loss associated with sleep deprivation. Stimulating them with signalling molecules removes the memory deficit!
Dogs are addicted to the smell of their owners. (Open Access)
The band-aid of the future:
Tuesday, November 18, 2014
Kissing Transfers 80 Million Bacteria Between Partners
Bacterial build-up on the human tongue (source). |
The 100 trillion microorganisms that make up the human microbiota are responsible for all kinds of important process, from digestion to synthesis to protection against disease. Microbiota composition is dependent on a bunch of factors, including age, diet, genetics, the environment, and who we interact with. Your mouth contains 700 varieties of bacteria, and these are influenced by the people you keep close to you, according to a new open access study published in Microbiome yesterday.
Sunday, November 16, 2014
This Week in Science (Nov 10-16, 2014)
This week's research highlights are all found in Open Access sources. That's right, everyone can access everything on this list! Enjoy!
Remember those plants that were grown on the ISS? Well it worked!
How to make diamonds from peanut butter.
Online dating using DNA matches?
Why most published research findings are false.
Stem cell transplants for Parkinson's getting closer.
A single-dose Ebola vaccine has been developed, and looks promising in non-human primates.
Mind-control of gene expression.
Whole genome sequencing of the world's oldest people.
Finally, the vocal repertoire of otters.
The skin microbiome.
And how lab contamination can confound microbiome analyses.
Maternal diet during pregnancy affects child mental health.
The long-term cardiovascular effects of four fad diets.
The world's first evidence that mediation alters cancer survivors' cells!
Remember those plants that were grown on the ISS? Well it worked!
How to make diamonds from peanut butter.
Online dating using DNA matches?
Why most published research findings are false.
Stem cell transplants for Parkinson's getting closer.
A single-dose Ebola vaccine has been developed, and looks promising in non-human primates.
Mind-control of gene expression.
Whole genome sequencing of the world's oldest people.
Finally, the vocal repertoire of otters.
The skin microbiome.
And how lab contamination can confound microbiome analyses.
Maternal diet during pregnancy affects child mental health.
The long-term cardiovascular effects of four fad diets.
The world's first evidence that mediation alters cancer survivors' cells!
Saturday, November 15, 2014
An Ode to Open Access Journals
In celebration of OpenCon 2014, I thought now would be as good a time as any to wax poetic about my love for OPEN ACCESS!!!!!
According to the United Nations, all people have a "right to enjoy the benefits of scientific progress and its applications". This was recognized in 1948 in the UN Declaration of Human Rights, but has received very little attention.
When I was submitting my PhD thesis to my university, I had to obtain permission to use my own research from the journals I had published in. If my institution were smaller, or in a developing country, I may have had to pay to access my chapters. In fact, there were definitely a few papers that were absolutely fundamental to my research that I could not access because my university had not purchased a license. This traditional approach to scientific research may have worked when journals were printed (and therefore had manufacturing costs), but it is no longer relevant to modern publishing where everything ends up online. Instead, the high cost of access limits the sharing of information, stunting scientific, medical, and academic research. This is especially true in developing countries.
Sunday, November 9, 2014
Science This Week (Nov 3-9, 2014)
Intel to fund a braille printer, invented by 13-year-old Shubham Banerjee.
A random genetic mutation has made HIV harmless in two patients. (Open Access)
The genesis of genitalia: why we have one and lizards have two.
A new device gives scientists an unprecedented, real-time view of how cancer spreads.
Bats compete for prey by jamming each other's sonar.
Genes influence body weight and shape by affecting gut microbes.
Power naps can help rodents overcome the detrimental effects of being born late in the season.
Synthetic biology may hold the key to long-termed, manned space exploration. (Open Access)
A new bioenergetic organelle has been discovered in plants! (both Open Access)
Koala studies provide clues about the origins of the human genome.
Seeing dinosaur feathers in a new light.
A high-fat diet delays brain aging in mice.
A random genetic mutation has made HIV harmless in two patients. (Open Access)
The genesis of genitalia: why we have one and lizards have two.
A new device gives scientists an unprecedented, real-time view of how cancer spreads.
Bats compete for prey by jamming each other's sonar.
Genes influence body weight and shape by affecting gut microbes.
Power naps can help rodents overcome the detrimental effects of being born late in the season.
Synthetic biology may hold the key to long-termed, manned space exploration. (Open Access)
A new bioenergetic organelle has been discovered in plants! (both Open Access)
Koala studies provide clues about the origins of the human genome.
Seeing dinosaur feathers in a new light.
A high-fat diet delays brain aging in mice.
Friday, November 7, 2014
Is This the Death of Science?
While waiting for a bus this morning, I noticed an article in the local newspaper about the gap between teens' attitudes toward science and their career plans. A recent poll by the science outreach organization Let's Talk Science found that 72% of high school students think science, technology, engineering, and math (STEM) are fun, and 78% think STEM fields provide lots of career options, but only 12% actually want STEM-related jobs. And a further 19% of student (that's almost 1 in 5!) think that careers in science and engineering are better suited to men.
I guess we should rejoice in the gains we've made as scientists in engaging youth. In 2010, only 34% of high school students thought science was fun, and 25% thought it was boring (now only 11% do!). So kids are more interested in science than they've been in the past, and they understand its importance, but they most still don't see a future for themselves participating in science. I have some ideas as to why that may be:
Thursday, November 6, 2014
How to Survive Ebola: researchers find clues to explain how some people survive infection
On Sunday, I gave you folks a link to an article about how genes affect Ebola survival. I decided to read a little bit more into it and do a full Ebola post, since this is actually a pretty interesting (and open access) study.
People have this idea that Ebola symptoms are a lot like what we saw in Outbreak. But in the 2014 Ebola outbreak, only a minority (30-50%) of those afflicted have progressed into hemorrhagic fever. There are different symptoms, including organ failure and shock, and different ways in which people succumb to them. Some folks survive, while others don't. It turns out that this is about more than simply luck.
Sunday, November 2, 2014
Science This Week (Oct 27 - Nov 2, 2014)
Have a look at these stunning images taken under a microscope for Nikon's 40th Annual Small World Photomicrography Competition.
And how Ebola evade the host immune system. (Open Access)
Female frogs are able to modify offspring development depending on when in the season they reproduce.
And October may be over, but you can learn more about the science of beer with this video.
Tuesday, October 28, 2014
Everything You Think You Know About Endosymbiosis is Wrong! (Maybe)
Source |
Monday, September 29, 2014
A Compound Found in Turmeric Shows Potential for Treating Neurodegenerative Diseases
Turmeric is a plant native to southeast Asia, harvested for its rhizomes and used to flavour and colour Indian dishes. It was used for thousands of years as a remedy for stomach and liver ailments, and for its antimicrobial properties when applied on skin to heal sores. The two major bioactive compounds of turmeric are known as curcumin and aromatic turmerone (ar-turmerone). Curcumin is believed to have anti-inflammatory, antimicrobial, anti-tumor, and antioxidant activities, and has been used in folk medicine to treat cancer, Alzheimer's disease, diabetes, arthritis, allergies, and other chronic illnesses. However, not much is known about the properties of ar-tumerone.
Some studies have linked ar-turmerone with antitumor properties, via the induction of apoptosis and through the inhibition of tumor cell invasion. Others still have looked at the anti-inflammatory properties of ar-tumerone in neural cells, suggesting it may be a useful in treating neurological diseases. A recent open access study by a research group from the Institute of Neuroscience and Medicine at the Research Centre Juelich (Germany) looked at ar-turmerone in this role using neural stem cells.
Friday, September 26, 2014
More "Pointless" Research: the 2014 Ig Nobel Award Winners!
In August, I wrote about so-called pointless research and an organization that celebrates this research that makes you laugh, then makes you think. Well, the 2014 winners of the Ig Nobel awards have been announced! We've got people studying the physics behind slipping on a banana peel, the neuroscience of seeing faces in mundane items, the psychopathy of being a night owl, the dangers of being a cat lady, dogs facing their own mecca when they poop, a tasty way to treat nosebleeds, reindeer don't trust people dressed as animals either, and a fairly gross way to produce starter probiotic cultures for sausage-making (it may put you off sausages from now on). Let's explore these interesting, improbable, and yes "pointless" findings!
Wednesday, September 24, 2014
Don't Skip the Gym: Wine is Definitely NOT Better Than Exercise
By now, the media has pounced on new research looking at resveratrol, a compound found in wine, and the comparison of its effects to exercise on different body systems. Naturally, the running headline is that drinking wine is better for you than going to the gym. Because that's what we need. Interested in hearing what the study actually says? Read on:
Tuesday, September 23, 2014
The Production of Circular RNA Competes with Normal RNA Processing in Cells
All of our genetic information is encoded in DNA. In order for genes to be expressed as functional proteins in our cells, they must first be copied (or transcribed) into single-stranded RNA molecules, known as messenger RNA (mRNA). These genetic instructions are then translated into amino acid sequences that make up proteins. Recently, a new type of RNA was discovered that forms in a closed, continuous loop, rather than in a linear molecule - known as circular RNA (circRNA). It turns out that circRNA are abundant in cells, but they are very poorly understood. Despite this, these RNA molecules seem to play a role in the development and progression of degenerative diseases. A recently published study from the Hebrew University of Jerusalem has given us a better idea of how circRNA are produced in the cell.
Sunday, September 21, 2014
Science This Week (Sept 15-21, 2014)
Scientists discover the brain's "sleep node".
Studies in mice show the role of the mitochondria in neurodegenerative diseases.
Biomedical implants heal bones faster.
Stem cells use molecular first aid kits to repair damage.
Monitoring Ebola in African Wild Apes using their waste. (Open Access)
Plant hormones regulate root nodule formation in legumes.
How pneumonia bacteria compromise heart health. (Open Access)
Using microbes to power up waste clean-up in rural areas.
Live vaccines are more effective, here's why. (Open Access)
Dogs can be pessimists too. (Open Access)
Peacocks' trains aren't such a drag after all.
Avocados: the ghost of evolutionary past.
So Finding Nemo wasn't all fiction: baby clownfish seen travelling hundreds of kilometers across open oceans. (Open Access)
Childbirth or being kicked in the balls: which hurts more?
Studies in mice show the role of the mitochondria in neurodegenerative diseases.
Biomedical implants heal bones faster.
Stem cells use molecular first aid kits to repair damage.
Monitoring Ebola in African Wild Apes using their waste. (Open Access)
Plant hormones regulate root nodule formation in legumes.
How pneumonia bacteria compromise heart health. (Open Access)
Using microbes to power up waste clean-up in rural areas.
Live vaccines are more effective, here's why. (Open Access)
Dogs can be pessimists too. (Open Access)
Peacocks' trains aren't such a drag after all.
Avocados: the ghost of evolutionary past.
So Finding Nemo wasn't all fiction: baby clownfish seen travelling hundreds of kilometers across open oceans. (Open Access)
Childbirth or being kicked in the balls: which hurts more?
Sunday, September 14, 2014
Science This Week (Sept 8-14, 2014)
Using plants to produce proteins capable of fighting high blood pressure.
It's time for a massive global response to the Ebola outbreak. Read more here.
Here's an evolutionary surprise: from worms to spinal discs.
The amount of gray matter in the brain may indicate level of risk tolerance.
Speaking of which, how is social media affecting your brain? A fantastic video from the ever-wonderful ASAP Science:
The discovery of three extinct squirrel species points to the origins of mammals - it may have been much earlier than we thought.
Using stem cells, researchers have shown that the neural cells of people with schizophrenia secrete higher amounts of three neurotransmitters broadly implicated in psychological disorders. (Open Access)
Your blood type may affect your memory later in life.
The drivers causing rich bird biodiversity in the neotropics has been identified.
Female baboons with boyfriends live longer.
Researchers have identified an enzyme that may be the key to slowing the aging process. (Open Access)
T-cells do quite a bit of chattering - and this may be the key to producing more efficient vaccines.
Non-dominant hand use drove the evolution of human hand morphology.
It's time for a massive global response to the Ebola outbreak. Read more here.
Here's an evolutionary surprise: from worms to spinal discs.
The amount of gray matter in the brain may indicate level of risk tolerance.
Speaking of which, how is social media affecting your brain? A fantastic video from the ever-wonderful ASAP Science:
The discovery of three extinct squirrel species points to the origins of mammals - it may have been much earlier than we thought.
Using stem cells, researchers have shown that the neural cells of people with schizophrenia secrete higher amounts of three neurotransmitters broadly implicated in psychological disorders. (Open Access)
Your blood type may affect your memory later in life.
The drivers causing rich bird biodiversity in the neotropics has been identified.
Female baboons with boyfriends live longer.
Researchers have identified an enzyme that may be the key to slowing the aging process. (Open Access)
T-cells do quite a bit of chattering - and this may be the key to producing more efficient vaccines.
Non-dominant hand use drove the evolution of human hand morphology.
Thursday, September 11, 2014
Sloppier DNA Repair Mechanism Takes Over in Aging Mice
A neuron transfected with GFP (source) |
Wednesday, September 10, 2014
Bee Bacteria may be an Alternative to Antibiotics
Raw honey has been used to treat infections for centuries, and today we are very aware of the extent of its antimicrobial properties, though we still don't know what it is exactly that makes honey so effective (the best idea right now is honey's osmolarity and hydrogen peroxide content). Six years ago, a group of researchers in Sweden discovered a large, unexplored bacterial microbiota in the honey stomach of honeybees, which was made up of 40 lactic acid bacterial strains, 9 strains of Lactobacillus, and 4 strains of Bifidobacterium. The researchers hypothesized that this microbiota, specifically the lactic acid bacteria (LAB), were responsible for the antimicrobial properties of honey. The group report (in an open access study published this week) having finally found the answer.
Monday, September 8, 2014
Science This (Last) Week (Sept 1-7, 2014)
Studies in the coffee genome shows that caffeine evolved three separate times: in coffee, tea, and chocolate plants.
The first brain-to-brain communication between humans!
A puzzling animal species, discovered in Australia in 1980, is so unlike any organism alive today, that it may rewrite our ideas on the history of life! (Open Access)
Having plants in the office makes you happier and more productive.
How do animals see the world?
Speaking of which, birds use quantum mechanics to navigate during migration.
Molting insects experience a huge drop in breathing ability - almost like having the wind knocked out of you, but for days!
A team of researchers has turned E. coli into a renewable source for propane gas production. (Open Access)
Wednesday, September 3, 2014
Prost! Contaminating Particles Found in German Beers
Ah fall, hands down the best season! Out come the sweaters and boots, the pumpkin spice lattes, thanksgiving, and of course Oktoberfest. But folks partaking in the annual German beer celebration may be getting a bit more than they bargained for. A new open access study looking at 24 different brands of German beer found a slew of contaminating substances, most notably microplastics. This is the only study that has looked at the contamination of beer, but it is very likely that this problem is not limited only to German beers.
Sunday, August 31, 2014
Science This Week (Aug 25-31, 2014)
Scientists have unexpectedly found a vaccine that completely blocks the HIV virus in monkeys. (Open Access)
Gut bacteria can block food allergies.
Toddlers have an intuitive understanding of probability.
How the universal "angry face" evolved.
Gut bacteria can block food allergies.
Toddlers have an intuitive understanding of probability.
How the universal "angry face" evolved.
Home is where the microbes are: we populate our homes with our own very distinct sets of bacteria.
What do humans, worms, and fruit flies have in common? A shared ancestry and a number of key genomic processes. (Open Access)
It is becoming increasingly difficult for young scientists to get funding to stay in research. Australian researchers have developed a crowd-funding platform to help (with video).
Friday, August 29, 2014
New Genomic Insights Into the 2014 Ebola Outbreak
The current Ebola outbreak in West Africa started in late 2013, and as of August 19th there have been 2240 cases and 1229 deaths. The virus is spreading through Guinea, Liberia, Sierra Leone, and Nigeria, and has infected aid workers from the US, UK, Spain, and possibly Germany and India. In response to this ongoing and unprecedented Ebola outbreak, a team of researchers has sequenced and analyzed 99 Ebola virus genomes, providing vital information about the origin and transmission of this outbreak.
Ebola has an average case fatality rate of 78%. Here is a really great (but somewhat graphic - you've been warned) article about what Ebola does to your body. In a nutshell, it starts out with a fever, sore throat, muscle pains, and headache (a lot like the flu). As the virus progresses, your ravaged immune system releases what is known as a "cytokine storm", where your immune system begins attacking your organs in an attempt to get rid of the virus. This leads to hemorrhagic fever, which causes the infected person to bleed to death. It's some pretty gross stuff, and completely devastating.
Ebola has an average case fatality rate of 78%. Here is a really great (but somewhat graphic - you've been warned) article about what Ebola does to your body. In a nutshell, it starts out with a fever, sore throat, muscle pains, and headache (a lot like the flu). As the virus progresses, your ravaged immune system releases what is known as a "cytokine storm", where your immune system begins attacking your organs in an attempt to get rid of the virus. This leads to hemorrhagic fever, which causes the infected person to bleed to death. It's some pretty gross stuff, and completely devastating.
Wednesday, August 27, 2014
Cancer Leaves an Epigenetic Fingerprint on DNA
Cancer cells splitting. (stock image) |
Sunday, August 24, 2014
Science This Week (Aug 18-24, 2014)
The first microscopic, slow-motion footage of a jellyfish sting:
While it sounds like the plot to a cheesy horror movie, Alzheimer's patients to be treated using young blood.
Researchers have developed a new type of shape-shifting plastic that could be used in facial reconstruction.
More than just X and Y: microRNAs also play a role in differentiating male and female tissues in fruit flies. (Open Access)
Artificial leaves may be faster at photosynthesis than natural leaves.
The world's primary forests - those that have not been touched by human activity - are diminishing, a new study provides policy options for conservation.
A microbial ecosystem has been discovered beneath the Antarctic ice sheets.
Elephant populations in Africa are dropping 2-3% per year thanks to poaching.
Animal calls contain more language-like structure than we thought.
Viruses are driving the life-and-death dynamics of algal blooms, with huge implications for our climate.
The fungus that has been killing people with AIDS in Southern California for years has been identified. By a 13 year old girl! (Open Access)
Accumulation of ibuprofen in rivers is threatening fish.
A newly discovered ant species supports a controversial theory of species formation.
More insights into the REAL paleo diet. (Open Access). And a really great (albeit long) video on the current fad paleo diet:
Not news, but I just stumbled upon it this week: did a time-traveling bird sabotage the Large Hadron Collider?
Sunday, August 17, 2014
Science This Week (Aug 11-17, 2014)
For the first time ever, a woman has won the Fields medal - math's most prestigious award!
Scientists are developing a dissolvable tampon made with a high-tech fabric that can deliver HIV drugs!
Study provides insight into the life and death of Earth's earliest animals.
Birth control pills shrink the size of women's ovaries, but it's safe and reversible.
The iron in whale poo helps feed the oceans.
Neurons in a silk scaffold mimic behaviour of a real brain.
Researchers have developed an enzyme therapy that prevents bone loss in people with neurofibromatosis type-1.
Geckos use their toe hairs to turn foot "stickiness" on an off.
Our ancestors' leaky cell membranes answer two of life's biggest questions. (Open Access)
Can we treat mental illness by rewiring memories?
New tomato developed with light tolerance gene, allowing them to grow 24/7.
Wednesday, August 13, 2014
Comparing Small and Large Genomes: the Antarctic midge and the Loblolly pine
This here on the left is the Antarctic midge - a small, flightless midge that is endemic to Antarctica. Despite being only 2-6 millimeters (0.08-0.23 in) long, it is the largest purely terrestrial animal in Antarctica, and the only insect.
On the right is the Loblolly pine. Native to the Southern US, it is the second most common tree species in the US, and is the most commercially important tree. It can reach a height of up to 30-35 meters (98-115 ft).
At 99 megabases, the Antarctic midge has the smallest insect genome to date - smaller even than the lice genome. Compare that to the loblolly pine, with the largest genome sequenced to date, at 23.2 gigabase pairs, or 234 times larger than that of the midge! These two genomes were sequenced just this year (and are both Open Access!).
On the right is the Loblolly pine. Native to the Southern US, it is the second most common tree species in the US, and is the most commercially important tree. It can reach a height of up to 30-35 meters (98-115 ft).
At 99 megabases, the Antarctic midge has the smallest insect genome to date - smaller even than the lice genome. Compare that to the loblolly pine, with the largest genome sequenced to date, at 23.2 gigabase pairs, or 234 times larger than that of the midge! These two genomes were sequenced just this year (and are both Open Access!).
Tuesday, August 12, 2014
Move Over Megalodon - Actual Sharks Are Far More Interesting!
In honor of Shark Week, let's examine some recent shark research. But unlike shark week documentaries, I won't lie to you (no, Megalodon is not still living).
Sharks are friggin' amazing works of evolution!
Sharks are friggin' amazing works of evolution!
Monday, August 11, 2014
Fundamental Plant Biochemical Pathway Origins Traced Back to Ancient Bacteria
Phenylalanine is a precursor for lignin, a compound that strengthens wood. |
Sunday, August 10, 2014
Science This Week (August 4-10, 2014)
Cigarette butts can now be converted into electrical parts. (Open Access)
An 11 year old girl invented a chemotherapy backpack to help cancer patients.
Psychological stress promotes skin healing in mice. (Open Access)
Galapagos hawks hand down lice like family heirlooms.
Cancer experts predict an end to chemotherapy within 20 years.
Is the media sensationalizing the Ebola outbreak? (op-ed)
Our brains make snap judgments about other people's trustworthiness.
Chili peppers may inhibit gut tumors. (Open Access)
Drug reverses brain deficits in mice with Alzheimer's. (Open Access)
Evolution at work: scientists have changed butterfly wing color in six generations.
Grizzly bears can get diabetes too!
Ever wondered how we ended up with fingers and toes?
A new species of bat - with golden fur - was discovered in Bolivia.
A Clostridium difficile vaccine proves to be safe and efficient in animal models.
How amphibians crossed the continents.
Mathematical equation for predicting happiness.
An 11 year old girl invented a chemotherapy backpack to help cancer patients.
Psychological stress promotes skin healing in mice. (Open Access)
Galapagos hawks hand down lice like family heirlooms.
Cancer experts predict an end to chemotherapy within 20 years.
Is the media sensationalizing the Ebola outbreak? (op-ed)
Our brains make snap judgments about other people's trustworthiness.
Chili peppers may inhibit gut tumors. (Open Access)
Drug reverses brain deficits in mice with Alzheimer's. (Open Access)
Evolution at work: scientists have changed butterfly wing color in six generations.
Grizzly bears can get diabetes too!
Ever wondered how we ended up with fingers and toes?
A new species of bat - with golden fur - was discovered in Bolivia.
A Clostridium difficile vaccine proves to be safe and efficient in animal models.
How amphibians crossed the continents.
Mathematical equation for predicting happiness.
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