日期：2015-01-28 Howard Hughes Medical Institute scientists have identified a circuit in the brains of mice that regulates thirst. When a subset of cells in the circuit is switched on, mice immediately begin drinking water, even if they are fully hydrated. A second... 阅读全文>>

日期：2015-01-28 In a new study from Sanford-Burnham Medical Research Institute (Sanford-Burnham), researchers have used human pluripotent stem cells to generate new hair. The study represents the first step toward the development of a cell-based treatment for peopl... 阅读全文>>

日期：2015-01-28 Girls who frequently consume sugary drinks tend to start their menstrual periods earlier than girls who do not, according to new research published online Jan 28 in Human Reproduction. In the first study to look at the relation between sugar-sweeten... 阅读全文>>

日期：2015-01-22 Dust from soil erosion due to wind can affect human health, traffic, and, on a larger scale, climate. Investigators compared different models that quantify how the wind energy spreads over an herbaceous surface using data from the Sahel region of Af... 阅读全文>>

日期：2015-01-22 Scientists investigated why Ebola virus is so deadly when it spreads from animals to humans and then from human-to-human contact. The research team looked at the Zaire Ebola strain in an animal system to understand how it gains strength. This virus... 阅读全文>>

日期：2015-01-22 Many health advocates advise people to eat an orange and drink water rather than opt for a serving of sugary juice. But in ACS' Journal of Agricultural and Food Chemistry, scientists report that the picture is not clear-cut. Although juice is indeed... 阅读全文>>

日期：2015-01-22 The creation of genetically modified and entirely synthetic organisms continues to generate excitement as well as worry. Such organisms are already churning out insulin and other drug ingredients, helping produce biofuels, teaching scientists about... 阅读全文>>

日期：2015-01-21 Earth's earliest primates have taken a step up in the world, now that researchers have gotten a good look at their ankles. A new study has found that Purgatorius, a small mammal that lived on a diet of fruit and insects, was a tree dweller. Paleonto... 阅读全文>>

日期：2015-01-21 Researchers at the Department of Energy's Oak Ridge National Laboratory have developed a population distribution model that provides unprecedented county-level predictions of where people will live in the U.S. in the coming decades. Initially develo... 阅读全文>>

日期：2015-01-21 Positional cloning is a genetic mapping technique used to pinpoint the location of specific traits of interest, such as disease-causing genes or mutations, within the genome. Very simply, this map-based technique involves crossing mutant individuals... 阅读全文>>

日期：2015-01-21 The wild tiger Panthera tigris is considered critically endangered, and it faces unprecedented threats, including habitat loss and fragmentation, depletion of prey, and continued illegal poaching for trade of tiger bones for traditional medicine and... 阅读全文>>

日期：2015-01-20 DNA molecules provide the source code for life in humans, plants, animals and some microbes. But now researchers report an initial study showing that the strands can also act as a glue to hold together 3-D-printed materials that could someday be use... 阅读全文>>

日期：2015-01-20 Beginning with the invention of the first microscope in the late 1500s, scientists have been trying to peer into preserved cells and tissues with ever-greater magnification. The latest generation of so-called super-resolution microscopes can see ins... 阅读全文>>

日期：2015-01-20 A group of white blood cells known as B cells, which play a key role in the human immune response, need a protein-targeting signal called mannose 6-phosphate (M6P) in order to proliferate, differentiate, and present immune cell-activating antigens,... 阅读全文>>

日期：2015-01-20 As predators go, cone snails are slow-moving and lack the typical fighting parts. They've made up for it by producing a vast array of fast-acting toxins that target the nervous systems of prey. A new study reveals that some cone snails add a weaponi... 阅读全文>>

日期：2015-01-19 TOO much work and too much wine go together like biscuits and cheese, a new international study finds. 一项新的国际研究发现，工作繁重会导致饮酒过量问题，两者就像饼干和奶酪一样密不可分。 EMPLOYEES who work more than 48 hours a week are 11 per cent mo... 阅读全文>>

日期：2015-01-19 Domestic dogs can perceive images on television similarly to the way we do, and they are intelligent enough to recognize onscreen images of animals as they would in real life -- even animals they've never seen before -- and to recognize TV dog sound... 阅读全文>>

日期：2015-01-16 New Year's Eve has come and gone, and I'm not at all stoked to see the pictures of myself from that night. It's not because I was captured doing something compromising, I just hate seeing myself on camera. 12.31来了又去，而我见到那晚自己的照片并不兴... 阅读全文>>

日期：2015-01-16 Just watching another person shiver can cause our own temperature to drop, scientists have found. 科学家发现，看着别人发抖，我们自己的体温也会下降。 Volunteers who viewed videos of actors plunging their hands into ice-cold water, experienced a simul... 阅读全文>>

日期：2015-01-16 Scientists have finally managed to extract DNA from Australia's extinct giant kangaroos - the mysterious marsupial megafauna that roamed Australia over 40,000 years ago. A team of scientists led by Dr Bastien Llamas and Professor Alan Cooper from th... 阅读全文>>