Why are microbeads controversial?
Image copyright Thinkstock MPs have recommended banning the tiny particles of plastic called "microbeads" which are used in a number of cosmetics and cleaning products. But why have they taken the move?Microbeads is the term given to the little bits of plastic that are sometimes added to products for their abrasive properties.For example, in shower gels these tiny plastic pieces - smaller than 5mm - are designed to remove dry cells from the surface of the skin.They are also found in face wa..>> view originalFrom the South Pole to the science section: How ice becomes knowledge
Scott K. Johnson reader comments 1 It’s -30 degrees Celsius, even though the Sun hangs ceaselessly in the sky. Dressed in puffy, insulated suits and gloves thick enough to both hinder dexterity and preserve fingers, a team gamely tilts a drill barrel back to horizontal. With one smooth, firm motion, a two-meter-long cylinder of ice, bursting with history, is pushed free and slides down a temporary work bench. Disturbed from its long slumber, this ice is destined for laboratories that will ..>> view originalNASA's hopes for Mars and the future are at stake in the 2016 election
Election years are a tense time for NASA. A new president can completely alter NASA’s long-term goals by resetting the space agency’s agenda. Whoever is elected will be faced with a choice: change the focus or scope of NASA’s goals, or keep things going on the same track. And given the uncertainty that has plagued NASA for a while, it’s very possible that major changes are on the horizon. NASA’s human spaceflight program stands at a significant crossroads NASA’s human spaceflight program stan..>> view originaluDisco: 3D Imaging That Makes Body Tissue Transparent May Help Map Human Brain
Most medical research to understand diseases uses lab mice: take a piece of thinly sliced tissue and study it under a powerful microscope. While the method has proven largely effective over the past many decades, it has associated costs and significantly, it is also extremely difficult to create complete 3D models of an organ or organism using individual slices of tissue.To address that problem, particularly in the context of the human brain, Ali Ertürk and his colleagues from the Institute for ..>> view originalJoin Scientists as They Explore the Sunken USS Independence Aircraft Carrier
Through a glistening snow of organic debris, the behemoth appears before the remotely operated vehicle: a sunken aircraft carrier human eyes haven’t seen in 65 years. “Oh my God,” Jim Delgado mutters over the comms, “hello Mighty I.” He’s finally glimpsed his unicorn, the USS Independence. On Monday evening, scientists aboard the research vessel Nautilus piloted two ROVs 2,600 feet deep off the coast of San Francisco to find this icon of World War II, all the while livestreaming their discovery..>> view originalChina unveils 2020 Mars mission probe and rover
Image copyright REuters/SASTIND China has given the world a first glimpse of its design for the space probe and rover it plans to use in its first mission to Mars.It intends to launch its mission in mid-2020.As part of the announcement in Beijing, the authorities also launched a public competition to come up with a name and logo for the voyager.China's ambitious space programme has been progressing at a rapid pace in recent years.On 16 August it launched a potentially groundbreaking quantum..>> view originalMelting Arctic ice is the "new normal," NASA says
It is by now a familiar headline -- the Arctic sea ice is melting at increasingly rapid rates. This year’s melt season started at an alarming pace, with a record-low maximum ice extent in March, the melt slowed down by June. While this summer won’t be setting a melt record, NASA scientists now say we have to consider this kind of melt “the new normal.”“A decade ago, this year’s sea ice extent would have set a new record low and by a fair amount. Now, we’re kind of used to these low levels of se..>> view originalWashington to Kill 11 of State's 90 Endangered Gray Wolves for Preying on Cows
Washington state wildlife officials have been cleared to exterminate a pack of 11 endangered wolves after the animals were determined to have been preying on cows. There are only 19 confirmed gray wolf packs in all of Washington state, comprising just 90 wolves, according to a June census by the state Department of Fish and Wildlife. Killing the so-called Profanity Peak pack would remove more than 12 percent of the confirmed state population. A gray wolf. Jake and Karen Hollingsworth..>> view originalNASA Regains Contact With 'Dead' Solar Mission
NASA has finally re-established contact with a sun-watching probe that was thought to be lost in space after it abruptly went silent in 2014. A signal from the long-lost spacecraft, called STEREO-B, was detected Sunday evening (Aug. 21) by NASA's Deep Space Network, a collection of space tracking stations that follows the agency's space missions across the solar system and beyond. NASA scientists had kept vigil for STEREO-B, making monthly searches for the probe until it phoned home Sunday at..>> view originalSynthetic DNA Does Math Using Analog Circuits
DNA circuits aren’t exactly new — they have previously been designed to solve problems like calculating square roots and playing games like tic-tac-toe — but they have almost always been digital, which is to say, information they process is translated into the binary code of zeroes and ones. But researchers from Duke University have made a nanoscale computer that uses synthetic DNA and is analog.Think of it like the difference between a regular calculator and an abacus.Unlike electrical circuits..>> view original
Saturday, August 27, 2016
Why are microbeads controversial? and other top stories.
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