A meta-analysis of green tea's impact on metabolism and weight-loss, undertaken by the Cochrane trust, finds no statistically significant correlation between drinking green tea and losing weight. Read the rest
From KQED Science:
Surface tension is the property of any liquid that describes how its particles stick together. In the case of water, surface tension is especially strong, enough to form a kind of film where it meets the air, whether at the surface or in a bubble...
If you’re a bug the size of a paperclip... surface tension makes a difference. Harnessing it, some aquatic beetles carry the oxygen they need underwater in the form of a temporary bubble, sort of like a natural scuba tank. Others encase themselves in a layer of air and draw oxygen from it their whole lives.
"Nature’s Scuba Divers: How Beetles Breathe Underwater" (Deep Look)
A Colombian HIV-positive man who'd gone off his meds died when a tapeworm in his body developed cancer and spread tumors to his lungs. It's the first known case of a person dying of a disease that had infected their parasite. Read the rest
“It gets them excited about being in biology class,” South Anchorage High School science teacher Chris Backstrum told the Alaska Dispatch News. “It starts the year off on a good foot."
"Something Preserved" (Great Big Story)
(photos by Marc Lester/ADN) Read the rest
NASA's Solar Dynamics Observatory (SDO) in orbit keeps a constant vigil on the Sun to help us understand how solar variations impact life on Earth. Launched in 2010, the SDO is part of NASA's Living With a Star (LWS) Program. NASA just released this magnificent 4K video shot by the SDO of our star's nuclear fire. It's titled "Thermonuclear Art."
You've likely read about Italian physician Dr. Sergio Canavero's plan to perform the first human head transplant? There is precedent with non-humans and it ain't pretty. In 1965, Dr. Robert J. White and his colleagues at Cleveland Metropolitan General Hospital transplanted the brain of one dog to another. "The transplant … acted as a second brain in the animal’s neck," according to Science News Letter. In the 1970s, White continued his experiments by transplanting rhesus monkeys' head onto other monkeys' bodies. (See the diagram above.)
Below, a special edition of The Midnight Archive profiles White, discusses similar research in Russia at the time, and touches on the ethical questions around these experiments. (Warning: this video is rather graphic.)
Simulations of circumstellar disks, the vast dust-planes left over from stellar formation, suggest that planets ten times larger than Jupiter may lurk in the universe.
Being far from the stars they orbit, these hypothetical worlds are so dark as to be all but invisible despite their enormity. But just as the presence of smaller worlds has been inferred, a team of astronomers believes the traces of the mega-Jupiters is seen in these proto-planetary swirls.
…huge spiral patterns seen around some newborn stars, merely a few million years old (about one percent our sun's age), may be evidence for the presence of giant, unseen planets. This idea not only opens the door to a new method of planet detection, but also could offer a look into the early formative years of planet birth… The conclusion that planets may betray their presence by modifying circumstellar disks on large scales is based on detailed computer modeling of how gas-and-dust disks evolve around newborn stars, which was conducted by two NASA Hubble Fellows, Ruobing Dong of Lawrence Berkeley National Laboratory, and Zhaohuan Zhu of Princeton University. Their research was published in the Aug. 5 edition of The Astrophysical Journal Letters.
The Atlantic's Adrienne Lafrance writes that the method could be used to find smaller, more interesting worlds:
Read the rest
The idea that massive planets could be detected this way is a big deal, and not just because of the potential existence of the planets. “In the future,” Dong says, “this could be another way to detect planets which otherwise we cannot see.”
In turn, finding newly formed planets in the disks around brand-new stars offers an unprecedented look at how and when planets are made.
When the Combat Methamphetamine Epidemic Act of 2005 passed, pharmacies moved all cold-medicine with the actually-works ingredient pseudoephedrine, only available on request and with a copy of your ID. In its place, the pharmacy shelves were restocked with phenylephrine, which was alleged to work just as well. It doesn't work at all. Read the rest
From Columbia University's Earth Institute:
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Ben Carson (retired neurosurgeon) believes that climate change is happening in the sense that there’s “always going to be either cooling or warming going on” and has called the climate debate “irrelevant.” While he has no plans to combat climate change, he does believe it’s important to protect the environment. If elected, he would approve the Keystone XL pipeline and develop oil resources while also investing in renewable resources; however, he would not support any government subsidies because he feels they interfere with the free market.
Donald Trump (real estate developer) doesn’t believe in climate change and asserts that the changes we see are actually just weather, unaffected by human actions. He puts climate change low on the list of problems we need to address. In 2012, Trump said global warming was a hoax created by China to make U.S. manufacturing uncompetitive. He supports regulating air pollution.
Hillary Clinton (former U.S. senator from New York and secretary of state) believes climate change is real and manmade. She has called it “the most consequential, urgent, sweeping collection of challenges we face as a nation and a world.” Clinton unveiled a plan that would install half a billion solar panels across the country by 2020 (a 700 percent increase in solar capacity); and expand renewable energy (including geothermal and hydro) sufficiently to produce 33 percent of U.S. electricity by 2027. Her Clean Energy Challenge, partnering with states, cities and communities, will include incentives, competitions, and investment in transmission and R&D.
Alewis sends us the Royal Institution's video: "A scene of explosive Halloween mayhem as one Jack-o'Lantern spews molten iron into another filled with gun cotton, all in the name of science."
A new study in Current Biology has found an inverse correlation between the volume of howler monkeys' notoriously loud hoots and the size of their testicles. Read the rest
A group at Saudi Arabia's King Abdulla University of Science and Technology have developed a new carbon-nanotube-based material that absorbs 98 to 99 percent of light between 400 and 1,400nm, from all angles, making even blacker than Rice University's 2008 none-more-black, Boston and Duke's 2008 none-more-black and Leiden University's 2009 none-more-black. That's pretty fucking black. Read the rest