Around 90 percent of ivory seized by law enforcement comes from African elephants that died less than three years before seizure, a study of ivory samples finds. The results confirm what many conservationists have suspected: Long-term stockpiles don’t contribute much ivory to illegal trade, and poached ivory quickly ends up in illegal markets. Thure Cerling […]
Ecologist Linda Geiser works her way through thick undergrowth on the steep hills of the Bull Run Watershed just outside of Portland, Ore. Every step in her heavy boots is deliberate. It would be easy to break an ankle here, or worse. A dense sea of ferns and berry bushes hides deep pits and sharp […]
Complex swirls and vortices can appear in the souplike phase of matter that existed just moments after the Big Bang. Computer simulations show that this substance, called the quark-gluon plasma, can contain “the hottest smoke ring in nature,” says Xin-Nian Wang of Lawrence Berkeley National Laboratory, coauthor of a paper published in the Nov. 4 […]
Harmful factors circulating in old blood may be partly responsible for the mental decline that can come with age, a small study in mice suggests. Irina Conboy of the University of California, Berkeley and colleagues devised a new way to mingle blood in two mice that didn’t involve stitching their bodies together, as in previous […]
Carbon and silicon don’t play nice in nature — they link up only in human-made products like paint and pharmaceuticals. But after just three generations of selective breeding, an enzyme can bring the two atoms together, scientists report November 25 in Science. It’s the first time biological tools have bonded carbon to silicon, perhaps opening […]
If you spent Thanksgiving trying in vain to convince relatives that the Pope didn’t really endorse Donald Trump or that Hillary Clinton didn’t sell weapons to ISIS, fake news has already weaseled its way into your brain. Those “stories” and other falsified news outperformed much of the real news on Facebook before the 2016 U.S. […]
In 2016, Colombia saw a surge in babies with microcephaly — more than four times the number reported in the previous year. The country documented 476 cases of the debilitating birth defect from January 31 to November 12, researchers note December 9 in Morbidity and Mortality Weekly Report, published by the Centers for Disease Control […]
Scientists, like athletes, are obsessed with experiencing the thrill of victory. Just as they fear the agony of defeat. And in the wide world of science, thrills make news much more often than the agony. Winners get the publicity, losers can’t get published. But sometimes the defeats deserve to make news too, especially when highly […]
During long summer days, kelp forests in high-latitude waters could create little safe zones for sea creatures in acidifying oceans, new research shows. Sunlight stretching on for most or all of a day keeps kelps and other big algae working overtime, trapping solar energy through photosynthesis. In the Arctic, kelps pulled enough carbon dioxide from […]
A case for genetic drinking Whether one drinks at all, how much and how often are partly due to heredity, [according to a Finnish study of 902 male twins].… A genetic element in alcoholism “seems highly plausible,” [researchers] said.… Surprisingly, genes also have much to do with creating an abstainer. Lack of control — which […]