As debate rages about whether to introduce a sugar tax, this is the story of how Mexico defied its own powerful fizzy drinks industry to impose a tax on soda. [more inside]
Part I: Bee Deaths Mystery Solved? Neonicotinoids (Neonics) May Actually Help Bee Health.
Reports that honey bees are dying in unusually high numbers has concerned many scientists, farmers and beekeepers, and gripped the public. There have been thousands of stories ricocheting across the web, citing one study or another as the definitive explanation for a mystery that most mainstream experts say is complex and not easily reducible to the kind of simplistic narrative that appeals to advocacy groups. We explore the claims by Harvard School of Public Health researcher Chensheng Lu, heralded by anti-pesticide and anti-GMO advocacy groups, for his research that purportedly proves that the class of chemicals known as neonicotinoids are killing bees and endangering humans.Part II: Bee Deaths And CCD - Flawed Chensheng Lu Harvard Studies Endanger Bees.
Here we examine the specific claim that neonics are responsible for Colony Collapse Disorder—the centerpiece of Lu’s assertions and again see how influential media manipulate quotes and selectively present information to ideologically influence trusting readers.[more inside]
Magnetotactic bacteria linedancing to music through the use of a superimposed magnetic field. Basically exactly what it says on the tin.
Your body is home to about 100 trillion bacteria and other microbes, collectively known as your microbiome. Naturalists first became aware of our invisible lodgers in the 1600s, but it wasn’t until the past few years that we’ve become really familiar with them. This recent research has given the microbiome a cuddly kind of fame. We’ve come to appreciate how beneficial our microbes are — breaking down our food, fighting off infections and nurturing our immune system. It’s a lovely, invisible garden we should be tending for our own well-being. But in the journal Bioessays, a team of scientists has raised a creepier possibility. Perhaps our menagerie of germs is also influencing our behavior in order to advance its own evolutionary success — giving us cravings for certain foods, for example.[more inside]
New GM technique injects mosquitoes with a gene that results in mostly male offspring, eventually leading to a population crash. Previous efforts to tackle the disease, that kills more than 1 million people each year – most of whom are African children – have included bed nets to protect people and insecticides to kill the mosquito species most responsible for the transmission of malaria (Anopheles gambiae). The new technique by a team at Imperial College London involves injecting mosquitoes with a gene that causes the vast majority of their offspring to be male, leading to an eventual dramatic decline in population within six generations as females disappear. “You have a short-term benefit because males don’t bite humans [and transmit malaria],” Andrea Crisanti, one of the authors of the new research, which was published in the journal Nature Communications on Tuesday, told the Guardian. “But in the long term you will eventually eradicate or substantially reduce mosquitoes. This could make a substantial contribution to eradicating malaria, combined with other tools such as insecticides.”
These new mosquitoes are now set to be used in Brazil, having been approved for use by the Brazilian government with a factory for their production now opened.[more inside]
We have released 7 hoax videos which appear to demonstrate paranormal phenomena. In fact they're all based upon real scientific principles. Over the past few months this hoax footage has been posted all over the internet in an attempt to find out if people would either accept it as genuine or question it in an attempt to discover the real truth. Can you find the hoaxes before we reveal the secret science behind these scams?Ghost on film (4:28)
Psychic Readings (13:07)
Chi energy (4:00)
Ouija board (5:17)
Psi Wheel (3:29)
Humans have co-evolved with the resident microbes that call us "home", known as the microbiota, consisting of trillions of cells that colonize our bodies. The microbiota carry out many beneficial functions, such as producing vitamins, aiding in digestion, and protecting against invading microbes, but disruption from antibiotics or delivery by Caesarian section may have consequences for human health. Recently, antibiotic use has been linked with obesity and asthma. Using both human studies and experimentally observed mice, we are beginning to understand how antibiotics may lead to the disappearance of microbes and to identify key microbes that impact our health.[more inside]
Jeffrey Mogil’s students suspected there was something fishy going on with their experiments. They were injecting an irritant into the feet of mice to test their pain response, but the rodents didn’t seem to feel anything. “We thought there was something wrong with the injection,” says Mogil, a neuroscientist at McGill University in Montreal, Canada. The real culprit was far more surprising: The mice that didn’t feel pain had been handled by male students. Mogil’s group discovered that this gender distinction alone was enough to throw off their whole experiment—and likely influences the work of other researchers as well. [more inside]
Whether it's the constant fretting over Miley Cyrus' influence on school girls or the growing (and troubling) tradition of Purity Balls, it's clear that society has a fascination with young women's sexuality — especially when it comes to controlling it. But what are we actually teaching today's girls about sex? Fueled by outdated ideals of gender roles and the sense that female sexuality is somehow shameful, there seem to be certain pernicious myths about girls and sex that just won't die. That sex education in America has gaping holes in its curriculum hasn't helped much, either; in a recent Centers for Disease Control (CDC) report just 6 out of 10 girls said that their schools' sex ed program included information on how to say no to sex. This lack of personal agency was reflected in a forthcoming study by sociologist Heather Hlavka at Marquette University as well, which found that many young girls think of sex simply as something that is "done to them." Knowledge is power, and we can promote a healthier relationship with sex by encouraging a more open dialogue, teaching girls to feel comfortable with their sexuality and, most importantly, emphasizing that their bodies are theirs and theirs alone. [more inside]
Bacterial diseases cause millions of deaths every year. Most of these bacteria were benign at some point in their evolutionary past, and we don’t always understand what turned them into disease-causing pathogens. In a new study, researchers have tracked down when this switch happened in one flesh-eating bacteria. They think the knowledge might help predict future epidemics. [more inside]
Talented Ukrainian nature photographer Vyacheslav Mishchenko has an eye for taking photos that bring small natural worlds up to our level, showing us how the world might look if we could see it through the eyes of an ant, snail or lizard. [more inside]
Harvard University and XVIVO have come together again (Previouslyw/ a commercial focus, Previouslierw/an Academic focus) to add to the growing series of scientific animations for BioVisions -- Harvard's multimedia lab in the department of Molecular and Cellular Biology. 'Protein Packing' strives to more accurately depict the molecular chaos in each and every cell, with proteins jittering around in what may seem like random motion. Proteins occupy roughly 40% of the cytoplasm, creating an environment that risks unintentional interaction and aggregation. Via diffusion and motor protein transport, these molecules are directed to sites where they are needed.
Much of this is no doubt inspired by the beautiful art and explained illustrations of David Goodsell, a biologist at Scripps who has been accurately portraying the crowdedness of the cellular landscape for a long time now.[more inside]
"In October 2013, Drs. Tim Perkins and Abby van Den Berg of the University of Vermont’s Proctor Maple Research Center, revealed the findings of a study at a maple syrup conference in New Brunswick, Canada that sent waves through the industry. In 2010, they were studying vacuum systems in sap collection operations. Based on the observation that one of the mature trees in the study that was missing most of its top was still yielding high volumes of sap, they hypothesized that the maples were possibly drawing moisture from the soil and not the crown. Previously, they had presumed that the sap dripping from tap holes was coming from the upper portion of the tree. But, if the tree was missing most of its crown then, they surmised, it must be drawing moisture from the roots. ... They realized that their discovery meant sugarmakers could use saplings, densely planted in open fields, to harvest sap. In other words, it is possible that maple syrup could now be produced as a row crop like every other commercial crop in North America." [more inside]
This Video Will Hurt
A detailed explanation of a fascinating field of science and medicine by the always interesting C.G.P. Grey.[more inside]
"My subject is a barren one – the world of nature, or in other words life; and that subject in its least elevated department, and employing either rustic terms or foreign, nay barbarian words that actually have to be introduced with an apology. Moreover, the path is not a beaten highway of authorship, nor one in which the mind is eager to range: there is not one of us who has made the same venture, nor yet one Roman who has tackled single-handed all departments of the subject."Naturalis Historia was written by Pliny the Elder between 77 and 79 CE and was meant to serve as a kind of proto-encyclopedia discussing all of the ancient knowledge available to him, covered in enough depth and breadth to make it by a reasonable margin the largest work to survive to the modern day from the Roman era. The work includes discussions on astronomy, meteorology, geography, mineralogy, zoology and botany organized along Aristotelian divisions of nature but also includes essays on human inventions and institutions. It is dedicated to the Emperor Titus in its epistle to the Emperor Vespasian, a close friend of Pliny who relied on his extensive knowledge, and its unusually careful citations of sources as well as its index makes it a precursor to modern scholarly works. It was Pliny's last work, as well as sadly his sole surviving one, and was published not long before his death attempting to save a friend from the eruption of Mt. Vesuvius that destroyed Pompeii and Herculaneum, famously recounted by Pliny's eponymous nephew Pliny the Younger.
Here is a reasonable translation that is freely available to download from archive.org for your edification.[more inside]
[Eleven] days ago, The New Yorker’s Daily Comment blog published an essay by Michael Specter titled “What Young Gay Men Don’t Know About Aids,” in which Specter points to the increase of “unprotected anal intercourse among gay men,” claims that “the rates of HIV infection will surely follow,” and then identifies the cause of this shift as the ignorance of my generation, who weren’t around to see the AIDS epidemic for themselves. The piece is a call to arms of sort, stating the need for increased public funding for HIV/AIDS prevention, and concludes by quoting Larry Kramer’s famous 1983 warning, “1,112 and Counting.” It’s a familiar argument—one that, in my lifetime, I have heard repeated ad nauseam and, I fear, largely misses what AIDS means to me and many other young gay men.
We are all surrounded by microorganisms, they live on us within us and around us, they affect everything we do, yet most people have no idea what they look like. Using the latest technology it is possible to see into this normally invisible world
Recently Emily Graslie, of the fantastic natural history tumblr and youtube series TheBrainScoop, was asked a question about whether she had personally experienced sexism in her field. Her response is fucking amazing.
Inside is her goldmine of awesome female science educators online with channels that focus on Science Technology Engineering and Math. My work day is fucked.[more inside]
Because who is perfect? Disabled mannequins will be eliciting astonished looks from passers-by on Zurich's Bahnhofstrasse today. Between the perfect mannequins, there will be figures with scoliosis or brittle bone disease modelling the latest fashions. One will have shortened limbs; the other a malformed spine. The campaign has been devised for the International Day of Persons with Disabilities by Pro Infirmis, an organisation for the disabled.
Busty Mannequins and an Inflated Sense of Beauty in Venezuela In Venezuela, women are confronted with a culture of increasingly enhanced physiques fueled by beauty pageants and plastic surgery. - The New York Times [more inside]
Busty Mannequins and an Inflated Sense of Beauty in Venezuela In Venezuela, women are confronted with a culture of increasingly enhanced physiques fueled by beauty pageants and plastic surgery. - The New York Times [more inside]
Dan Burns explains his space-time warping demo at a PTSOS workshop at Los Gatos High School, on March 10, 2012. [more inside]
On March 22, 1621, a Native American delegation walked through what is now southern New England to meet with a group of foreigners who had taken over a recently deserted Indian settlement. At the head of the party was an uneasy triumvirate: Massasoit, the sachem (political-military leader) of the Wampanoag confederation, a loose coalition of several dozen villages that controlled most of southeastern Massachusetts; Samoset, sachem of an allied group to the north; and Tisquantum, a distrusted captive, whom Massasoit had brought along only reluctantly as an interpreter. Massasoit was an adroit politician, but the dilemma he faced would have tested Machiavelli. About five years before, most of his subjects had fallen before a terrible calamity. Whole villages had been depopulated. It was all Massasoit could do to hold together the remnants of his people. Adding to his problems, the disaster had not touched the Wampanoag’s longtime enemies, the Narragansett alliance to the west. Soon, Massasoit feared, they would take advantage of the Wampanoag’s weakness and overrun them. And the only solution he could see was fraught with perils of its own, because it involved the foreigners—people from across the sea.
The Indians who first feasted with the English colonists were far more sophisticated than you were taught in school. But that wasn't enough to save them In addition to providing a beautifully written account of what happened, the article does something subtle but incredibly cool in using a Native centered perspective that really illuminates how dramatically silenced and othered Native voices are in other accounts.[more inside]
Spider webs are incredibly strong and flexible. It’s no surprise, then, that spider silk proteins may someday form durable artificial ligaments for people who have injured their knees or shoulders. Six different kinds of silk are produced by orb-web weaving spiders. These silk fibers have very different mechanical properties that are so effective they have changed very little over millions of years. How to synthetically develop these silks is one focus of Lewis’ research. The secret to producing large quantities of spider silk is to use “factories” designed to manufacture spider silk proteins that are easily scale-able and efficient. Lewis uses transgenic goats, E.coli bacteria, transgenic alfalfa and transgenic silk worms to produce the spider silk proteins used to create spider silk. Spider silk is 100 times stronger than natural ligaments and 10 times stronger than natural tendons; it is stronger than Kevlar and more elastic than nylon.
A 6min brief on the work being done in Laramie, WY whereby spider silk is being spun from goat milk. SPIDERGOATS[more inside]
"On a sunny day in 1998, Maura Gillison was walking across the campus of Johns Hopkins University in Baltimore, Maryland, thinking about a virus. The young oncologist bumped into the director of the university's cancer centre, who asked politely about her work. Gillison described her discovery of early evidence that human papillomavirus (HPV) — a ubiquitous pathogen that infects nearly every human at some point in their lives — could be causing tens of thousands of cases of throat cancer each year in the United States. The senior doctor stared down at Gillison, not saying a word. “That was the first clue that what I was doing was interesting to others and had potential significance,” recalls Gillison."
Human papillomavirus is causing a new form of head and neck cancer— leaving researchers scrambling to understand risk factors, tests and treatments.[more inside]
In this teaching video, Suzanne Stensaas, Ph.D., demonstrates the properties and anatomy of an unfixed brain, showing its squishiness and vulnerability. [WARNING: The video contains graphic images, a human brain from a recent autopsy.]
Dr Bruce Ames, a toxicologist and one of the world's most cited scientists, discusses the impact of his Ames test, "toxic chemicals," and scaremongering [more inside]
Three months ago, Psychology Today blogger Susan Krauss Whitbourne posted an essay entitled The Rarely Told Story of Zimbardo’s Prison Experiment. I eagerly read it in the hope that it would reveal some heretofore relatively unknown truth about this famous experiment. But, in fact, the essay is simply a summary--a well written one--of the experiment that takes at face value Phillip Zimbardo’s and his colleagues’ conclusions. In the introduction to the essay, Whitbourne states that the experiment is “Depicted in movies, television and of course all introductory psych textbooks…” It’s true that Zimbardo’s experiment is one of the two or three most famous experiments in the history of psychology. But it’s not true that it’s depicted in all introductory psychology textbooks. I’m the author of one such textbook (which is now in it’s 6th edition and is used in many colleges and universities). One of the questions I’m frequently asked about the book by professors who teach from it is, “Why don’t you include Zimbardo’s prison experiment, like all other textbook authors do?”Here’s why, the results of the famous Stanford Prison Experiment have a trivial explanation. See also, The lie of the Stanford Prison Experiment [more inside]
When a liquid is dropped onto a smooth plate that is heated to a specific temperature well above its boiling point, boiled vapor will get trapped underneath the remainder of the droplet insulating it from the hot plate, allowing it to dance around the plate like oil on a wet surface in what is known as the Leidenfrost effect. Intriguingly, surfaces that are grooved into the shape of a saw blade will cause droplets suspended by the Leidenfrost effect to predictably skitter in the direction of the groove, allowing University of Bath undergraduate students Carmen Cheng and Matthew Guy to build a fascinating maze. [more inside]
In March 2012, inspectors from the U.S. Department of Agriculture uncovered a problem in Elgin, Texas. Beef sausage from a small family-run meat processor appeared to have been contaminated with a nasty bacterium called Listeria monocytogenes. The bug can make people sick and, in rare cases, be deadly. The processor had to recall more than a ton of sausage. It’s the kind of story that strikes terror in the hearts of other sausage peddlers, including Mike Satzow, so he uses phages to keep his small company's sausages safe to eat.
Warning! The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased, entry for the United States of America
X inactivation is a type of gene dosage compensation. In humans, the sex chromosomes X and Y determine the sex of an individual - females have two X chromosomes (XX), males have one X and one Y chromosome (XY). All of the genes on the Y chromosome are required in male development, while the genes on the X chromosome are needed for both male and female development. Because females receive two X chromosomes, they inherit two copies of many of the genes that are needed for normal function. Extra copies of genes or chromosomes can affect normal development. An example is Down's syndrome, which is caused by an extra copy of part or all of chromosome 21. In female mammals, a process called X inactivation has evolved to compensate for the extra X chromosome. In X inactivation, each cell 'switches off' one of its X chromosomes, chosen at random, to ensure the correct number of genes are expressed, and to prevent abnormal development.
Here is a helpful eleven minute description of what it is and why it's important by Etsuko Uno and metafilter's own Drew Berry in a fucking gorgeous Goodsell-esque 3D animation.[more inside]
How often does a great story dominate the headlines, only to be dropped from the news cycle? How often do journalists tell us of a looming danger or important discovery – only to move quickly to the next new thing? What really happened? How did these events change us? And what are the lingering consequences that may affect our society to this day? These are the questions we are answering at Retro Report, an innovative documentary news organization launched in 2013 as a timely online counterweight to today’s 24/7 news cycle. Combining documentary techniques with shoe-leather reporting, we peel back the layers of some of the most perplexing news stories of our past with the goal of encouraging the public to think more critically about current events and the media in ~10 minute segments. [more inside]
Combining 3D scans of real life models in ultra high detail with the Oculus Rift and the Razer Hydra for movement controls to make one of the most realistic and spooky experiences in Virtual Reality [NSFW Artistic nudity] Welcome to the future. [more inside]
Did you hear that a group of 400 angry farmers attacked and destroyed a field trial of genetically modified rice in the Philippines this month? That, it turns out, was a lie. The crop was actually destroyed by a small number of activists while farmers who had been bussed in to attend the event looked on in dismay.
Here is L0pht Heavy Industries testifying before the United States Senate Committee on Governmental Affairs, Live feed from CSPAN, May 19, 1998. Starring Brian Oblivion, Kingpin, Tan, Space Rogue, Weld Pond, Mudge, and Stefan von Neumann. This is the infamous testimony where Mudge stated we could take down the Internet in 30 minutes. Although that's all the media took from it, much more was discussed. See for yourself. (59:04)
Search for wildflowers by location, color, flower shape, flower size and time of blooming. 3,126 plants indexed. This web site helps those of us with limited knowledge of botany to identify flowering plants that are found outside of gardens. This help is provided by presenting you with small images of plants. You can use a number of search techniques to get to the images that are most likely the plant you are looking for. When you click on a plant image the program shows you links to plant descriptions and more plant images. The site has about 5 ways of searching for a plant. You can use these searches in any combination. Some searches eliminate some plants from consideration. Most searches give a "score" to each plant depending on how well the plant matches the search criteria. The plants with the highest score are displayed at the top of the results. Click here for Instructions. [more inside]
In the past few days, the Internet has been filled with commentary on whether the National Science Foundation should have paid for my study on duck genitalia, and 88.7 percent of respondents to a Fox news online poll agreed that studying duck genitalia is wasteful government spending. The commentary supporting and decrying the study continues to grow. As the lead investigator in this research, I would like to weigh in on the controversy and offer some insights into the process of research funding by the NSF.
Come for the passionate defense of basic science, stay for the explosive eversion of a duck penis.[more inside]
With incisor-like claws that can tunnel beneath your skin in seconds, ticks are rapidly establishing themselves as the Swiss Army knife of disease vectors. Carl Zimmer walks into the woods to find out why these tiny beasts appear to be skyrocketing in number – and outsmarting environmental scientists trying to control them with every bite.
This is a talk I gave on June 1, 2012, about the numerous crank physics letters and books that had been sent to, and saved by, the Physics Department at Cal Poly in San Luis Obispo, CA.
Don't believe the apparent video length, the talk is 41 minutes long and the camera sticks around for about 20 minutes of the awesome Q&A afterwards.[more inside]
Science & the City is the public gateway to the New York Academy of Sciences. We publish a comprehensive calendar of public science events in New York City, host events featuring top scientists in their fields, and produce a weekly podcast covering cutting-edge science. Meanwhile, the American Museum of Natural History presents over 200 public programs each year including workshops, seminars, lectures, cultural events, and performances. Museum lectures are presented by scientists, authors, and researchers at the forefront of their fields. These engaging sessions often reveal the findings of the Museum's own cutting-edge research in genomics, paleontology, astrophysics, biodiversity, and evolutionary biology and complement the science behind the Museum's world-famous cultural and scientific halls and special exhibitions. Now many are available in podcast form. [more inside]
The Hidden Life Of the Cell (57:24) There is a battle playing out inside your body right now. It started billions of years ago and it is still being fought in every one of us every minute of every day. It is the story of a viral infection - the battle for the cell. This film reveals the exquisite machinery of the human cell system from within the inner world of the cell itself - from the frenetic membrane surface that acts as a security system for everything passing in and out of the cell, the dynamic highways that transport cargo across the cell and the remarkable turbines that power the whole cellular world to the amazing nucleus housing DNA and the construction of thousands of different proteins all with unique tasks. The virus intends to commandeer this system to one selfish end: to make more viruses. And they will stop at nothing to achieve their goal. Exploring the very latest ideas about the evolution of life on earth and the bio-chemical processes at the heart of every one of us, and revealing a world smaller than it is possible to comprehend, in a story large enough to fill the biggest imaginations.
You may be familiar with molecular movies from my two previous megaposts collecting them, but this extended documentary uses original animation that is collected into a coherent educational narrative and is just so fucking gorgeous. Enjoy.[more inside]
Sickness being attributed to wind turbines is more likely to have been caused by people getting alarmed at the health warnings circulated by activists, an Australian study has found. Complaints of illness were far more prevalent in communities targeted by anti-windfarm groups, said the report's author, Simon Chapman, professor of public health at Sydney University. His report concludes that illnesses being blamed on windfarms are more than likely caused by the psychological effect of suggestions that the turbines make people ill, rather than by the turbines themselves. [more inside]
With a database of over 5,000 scientists, from Nobel prize winners to postdocs and PhD students, Sense About Science works in partnership with scientific bodies, research publishers, policy makers, the public and the media, to change public discussions about science and evidence. They make these scientists available for questions from civic organizations and the public looking for scientific advice from experts, campaign for the promotion of scientific principles in public policy, and publish neat guides to understanding science intended for laypeople. [more inside]
Abstract: Cycling is popular among children, but results in thousands of injuries annually. In recent years, many states and localities have enacted bicycle helmet laws. We examine direct and indirect effects of these laws on injuries. Using hospital-level panel data and triple difference models, we find helmet laws are associated with reductions in bicycle-related head injuries among children. However, laws also are associated with decreases in non-head cycling injuries, as well as increases in head injuries from other wheeled sports. Thus, the observed reduction in bicycle-related head injuries may be due to reductions in bicycle riding induced by the laws. [FULL TEXT PDF] [more inside]
Does just what it says on the tin,
"So, naturalists observe, a flea has smaller fleas that on him prey; and these have smaller still to bite ’em; and so proceed ad infinitum." - Jonathan Swift
False memories of fabricated political events [ABSTRACT]. In the largest false memory study to date, 5,269 participants were asked about their memories for three true and one of five fabricated political events. Each fabricated event was accompanied by a photographic image purportedly depicting that event. Approximately half the participants falsely remembered that the false event happened, with 27% remembering that they saw the events happen on the news. Political orientation appeared to influence the formation of false memories, with conservatives more likely to falsely remember seeing Barack Obama shaking hands with the president of Iran, and liberals more likely to remember George W. Bush vacationing with a baseball celebrity during the Hurricane Katrina disaster. A follow-up study supported the explanation that events are more easily implanted in memory when they are congruent with a person's preexisting attitudes and evaluations, in part because attitude-congruent false events promote feelings of recognition and familiarity, which in turn interfere with source attributions. [FULL TEXT PDF AVAILABLE HERE] [more inside]
"Hundreds (maybe thousands) of spiders congregate between poles in the town of Santo Antonio de Plantina / PR." [more inside]
A documentary film about Norman Borlaug, the Iowa farm boy who saved over a billion people from starvation. (1:06:47) Americans have little knowledge of one of their greatest sons. Why do schoolchildren in China, India, Mexico, and Pakistan know the name and work of Nobel Peace Prize winner [His speech] Norman Borlaug while so few of his countrymen have never heard of him? How did a dirt-poor farm boy from rural Iowa grow up to save a billion people worldwide from starvation and malnutrition and become the father of the Green Revolution? What were the inherited traits and environmental factors that shaped his astonishing journey and led to successes that surprised even him? What can we learn from his life and views that might help the human race survive the next critical century? [more inside]
Sneezing in Slow Motion; somehow simultaneously more fascinating, terrifying, and disgusting than you'd imagine it'd be. [more inside]