USGS at The Wildlife Society: From sea-ice change to contaminants to predators and prey
... Holocene between 5 and 10 thousand years ago when temperatures were substantially warmer than they are now. These facts alone suggest there is reason to continue to study polar bears. Because current predictions of increasing temperature are based upon a relatively short time line there is uncertainty about what...Dinosaurs' climate shifted too, reports show
...a Research present new evidence that ocean surface temperatures varied as much as 6 degrees Celsius (about 11 degr...l says, because it portrays an ancient Earth whose temperatures shifted erratically due to changes in carbon cycling and did so without human input. "Combined wit......cal products of fossil fuel generation at elevated temperatures and pressure, without direct involvement of microbes. In the PNAS article, the team argues that microbes played a key role in the formation of these hydrocarbons. "Sediments contain organic material (the fossil remnant of oceanic plants and animals...Cassini's Visual and Infrared Mapping Spectrometer detects vast polar ethane cloud on Titan
...itudes." "We think that ethane is raining or, if temperatures are cool enough, snowing on the north pole right now. When the seasons switch, we expect ethane to condense at the south pole during its winter," Griffith said. If polar conditions are as cool as predictions say, ethane could accumulate as polar ice....Using microbes to fuel the US hydrogen economy
...ck can generate copious amounts of hydrogen gas at temperatures between 158 and 185 degrees Fahrenheit at atmospheric to elevated pressure. In his talk, van der Lelie will describe the complex biochemistry of these reactions as well as the potential to scale up this system for continuous, farm-based, economical h...News tips from the Journal of Neuroscience
...but not sensory neurons. Whereas the mutant sensed temperatures normally, it did not stay away from temperatures associated with a lack of food. By measuring in vivo calcium transients evoked by temperature chan...Dipstick test for meningitis culprits
...thout refrigeration and used at bedside in the hot temperatures typical of the African savannah during the meningitis season. The dipsticks are easier to use than currently available test kits, give more rapid results, and are more accurate. They promise to be an important tool for guiding individual treatment de...Evolution of Old World fruit flies on three continents mirrors climate change
...s between sample collections. At nearly all sites, temperatures had increased consistent with global warming. "If the inversions are sensitive to temperature, then you'd expect to see a corresponding increase in low-latitude-type inversions at all latitudes," Huey said. When the researchers compared the old...Gold nanoparticles prove to be hot stuff
...he heating effect could be useful in raising local temperatures in certain experiments, such as heating a protein just enough to allow scientists to watch it unfold, the paper suggests....... a difference between functioning best at moderate temperatures and being adapted to living in extreme heat. The r... amino acids in the enzyme adapted to the moderate temperatures with those of the heat-loving enzyme, they observed an increase of about 10 degrees in the average t...News tips from the Journal of Neuroscience
...omplete penetrance and was more prominent at lower temperatures and younger ages. Kcc -related seizuresusceptibility was also reduced in flies treated with the GABA A receptor antagonist picrotoxin and in flies that expressed reduced levels of the GABA A receptor....Study provides first-ever look at combined causes of North Atlantic and Arctic Ocean freshening
...with one another, but in synchrony with rising air temperatures and an amplifying North Atlantic Oscillation (NAO)...play between the NAO and NAM, and continued rising temperatures from global greenhouse warming, will likely determine whether the Arctic and North Atlantic Oceans w...Cooling analgesia harnessed to relieve chronic pain
... nerve cells in the skin and responds to both cool temperatures and cooling chemicals, such as the active ingredients in mint. TRPM8 belongs to an interesting class of proteins whose members mediate the sensation of diverse stimuli, including taste, temperature, and touch. Approaches using cooling compounds ...Tips from the journals of the American Society for Microbiology
... believe L. monocytogenes can grow in refrigerated temperatures and in the presence of organic acids and salt, indicating that exposure to certain environmental stress conditions may in fact enhance the organism's survival and induce expression of virulence genes. In the study researchers measured the effects o...More carbon dioxide may help some trees weather ice storms
...ation of loblollies, which are susceptible to cold temperatures and ice damage. But according to the results of this study, Oren said, climate changes under global warming would tend to favor the spread of such fast-growing trees. ...Ancient Arctic water cycles are red flags to future global warming
...cipate big changes in patterns of precipitation as temperatures rise where and when it will rain and whether or not water resources are available," said Pagani. "This work is potentially a red flag for things to come." Co-author Matthew Huber, an assistant professor of earth and atmospheric sciences at Purdue U...Overall Antarctic snowfall hasn't changed in 50 years
...increase in Antarctic precipitation as atmospheric temperatures rise. "The year-to-year and decadal variability ...ades, including recent years for which global mean temperatures have been warmest," Monaghan said. The findings also suggest thickening of Antarctica's massive ic...Study documents marathon migrations of sooty shearwaters
...formation about the birds' diving behavior and the temperatures they encountered at sea. The temperature data helped Shaffer's team ensure the accuracy of the location data, using a technique that integrates temperature readings from the animals with those obtained by orbiting satellites. This method was develo...Germans do well in the third round of EURYI Awards
...ntum mechanical systems, responds to extremely low temperatures by suddenly becoming organised. Scientists suspect that such processes are behind the coloured belts of Jupiter, certain ocean currents and plasma in fusion reactors. By understanding the dynamic properties of these flows, Hallatschek hopes to develo...Current technology for brain cooling unlikely to help trauma patients
...ntinually perfuse brain tissue, prevents a drop in temperatures around the head from penetrating beyond a certain ... Many ongoing clinical trials try to reduce brain temperatures through cooling units incorporated into hats or other devices that surround the head. However, the n...