日期：2015-07-23 Electronic cigarettes or e-cigs have been touted as a tool smokers can use to wean themselves off of traditional cigarettes, which many believe are more harmful than their e counterparts. But because e-cig liquid also contains nicotine and emits car... 阅读全文>>

日期：2015-07-23 Bacteria have plenty of things to send out into world beyond their own boundaries: coordinating signals to other members of their species, poisons for their enemies, and devious instructions to manipulate host cells they have infected. Before any of... 阅读全文>>

日期：2015-07-22 Oceans have absorbed up to 30 percent of human-made carbon dioxide around the world, storing dissolved carbon for hundreds of years. As the uptake of carbon dioxide has increased in the last century, so has the acidity of oceans worldwide. Since pre... 阅读全文>>

日期：2015-07-22 Scanning sonar from a scientific expedition has revealed the remains of a previously unknown shipwreck more than a mile deep off the North Carolina coast. Artifacts on the wreck indicate it might date to the American Revolution. Marine scientists fr... 阅读全文>>

日期：2015-07-22 The volume of Arctic sea ice increased by a third after the summer of 2013 as the unusually cool air temperatures prevented the ice from melting, according to UCL and University of Leeds scientists. This suggests that the ice pack in the Northern he... 阅读全文>>

日期：2015-07-22 A slow-down in global warming is not a sign that climate change is ending, but a natural blip in an otherwise long-term upwards trend, research shows. In a detailed study of more than 200 years' worth of temperature data, results backed previous fin... 阅读全文>>

日期：2015-07-21 Mammals were evolving up to ten times faster in the middle of the Jurassic than they were at the end of the period, coinciding with an explosion of new adaptations, new research shows. Early mammals lived alongside the dinosaurs during the Mesozoic... 阅读全文>>

日期：2015-07-21 On summer evenings, we try our best to avoid mosquito bites by dousing our skin with bug repellents and lighting citronella candles. These efforts may keep the mosquitoes at bay for a while, but no solution is perfect because the pests have evolved... 阅读全文>>

日期：2015-07-21 A newly identified species of feathered dinosaur is the largest ever discovered to have a well-preserved set of bird-like wings, research suggests. Palaeontologists working in China unearthed the fossil remains of the winged dinosaur - a close cousi... 阅读全文>>

日期：2015-07-21 Research from North Carolina State University shows that lightweight composite metal foams are effective at blocking X-rays, gamma rays and neutron radiation, and are capable of absorbing the energy of high impact collisions. The finding means the m... 阅读全文>>

日期：2015-07-21 CRISPR/Cas systems for genome editing have revolutionized biological research over the past three years, and their ability to make targeted changes in DNA sequences in living cells with relative ease and affordability is now being applied to clinica... 阅读全文>>

日期：2015-07-21 Polar bears are unlikely to physiologically compensate for extended food deprivation associated with the ongoing loss of sea ice, according to one-of-its-kind research conducted by University of Wyoming scientists and others, and published today in... 阅读全文>>

日期：2015-07-21 Researchers at Columbia University have reported a new approach to visualize glucose uptake activity in single living cells by light microscopy with minimum disturbance. In a recent study published in Angewandte Chemie International Edition, Associa... 阅读全文>>

日期：2015-07-21 In Eastern Australia, the ocean has been warming at a rate that's 4-times that of the global average. Many marine species have been appearing further south than they ever have before, while others have stayed put. A new study identifies which charac... 阅读全文>>

日期：2015-07-20 Men with female bosses are more likely to ask for a pay rise because they feel their masculinity is under attack, a psychology study has suggested. 一项心理研究表明，给女老板当部下的男员工要求提薪的可能性更大，因为他们觉得自己的男性气概受到了攻击。... 阅读全文>>

日期：2015-07-16 No swimming signs have already popped up this summer along coastlines where fecal bacteria have invaded otherwise inviting waters. Some vacationers ignore the signs while others resign themselves to tanning and playing on the beach. But should those... 阅读全文>>

日期：2015-07-16 Canadian and British researchers have discovered that chromosomes play an active role in animal cell division. This occurs at a precise stage - cytokinesis - when the cell splits into two new daughter cells. It was observed by a team of researchers... 阅读全文>>

日期：2015-07-16 The coffee berry borer is the most devastating coffee pest in the world. The tiny beetle is found in most regions where coffee is cultivated, and a big outbreak can slash crop yield by 80 percent. It's also a caffeine fiend. The insect is the only c... 阅读全文>>

日期：2015-07-16 Physicists in Syracuse University's College of Arts and Sciences have confirmed the existence of two rare pentaquark states. Their discovery, which has taken place at the CERN Large Hadron Collider (LHC) in Geneva, Switzerland, is said to have major... 阅读全文>>

日期：2015-07-16 Healthy brain, muscle, eye and heart cells would improve the lives of tens of thousands of people around the world with debilitating mitochondrial diseases. Now, researchers at the Salk Institute have gotten one step closer to making such cures a re... 阅读全文>>