Science class experiment reveals vitamin B12 secret
... people older than 60 in this country have trouble absorbing B12. B12 deficiency can lead to nerve damage, anemia, and forgetfulness. Walker's team's genetic discovery was made possible by a gimmick Walker designed to capture the attention of undergraduate biology students in the early 1980s. When he added a...New crop of technology reveals plant health
...ch tells the system the rate at which the plant is absorbing energy. That reflects the current state of photosynthesis, itself a reflection of the plant's health. These sensors communicate their data through specially developed wireless transmitters. Scientists at lead project partner the Tyndall National Ins...The 100 greatest advances in medicine
...nts and future promise of medicine by reading this absorbing and important book. Eugene W. Straus, M.D. (New York, NY), author of the acclaimed Rosalyn Yalow, Nobel Laureate, is emeritus professor of medicine at the State University of New York Health Science Center at Brooklyn. He was formerly chief of the Di...Hold your breath; Plants may absorb less carbon dioxide than we thought
...ral" open-air ecosystems to increase their size by absorbing extra CO2. Only two other long-term experiments in the world are asking similar questions. As fossil fuel burning continues and increases, more CO2 is pumped into the atmosphere. Some reports, including the Intergovernmental Panel on Climate Change's...Pollutant haze heats the Arctic
...a, to infer how effective low-lying clouds were at absorbing heat emitted by the Earth's surface how good a blanket they were," Garrett says. (The more heat clouds absorb from the ground, the more heat they emit.) "Using sophisticated theory, we also used these data to estimate how much water the clouds ha...Microcapsules open in tumor cells
...them. Metal nanoparticles are particularly good at absorbing the laser light and transmitting the heat further into their surroundings, heating up the walls. They became so hot that the bonds broke between the polymers and the shell and the capsules eventually opened. For the time being, the scientists have ...Spring in your step helps avert disastrous stumbles, scientists say
...nd tarsometatarsophalangeal joints act as dampers, absorbing energy when the limb contacts the ground at an unexpected steep angle and shorter limb length, or as springs, returning energy when the limb contacts the ground at an unexpected shallow angle and more full extension." These dynamic processes occur ...Biodiversity controls ecological 'services,' report scientists in comprehenisive analysis
...ntrolling pests, breaking down organic matter, and absorbing carbon dioxide, a greenhouse gas." As one example, one of the 111 studies included in the analysis reveals the role of species diversity in controlling agricultural pests. That experiment shows the critical importance of the ladybug beetle part of......arer - and secondly, they must be tough and energy absorbing - a bone should not splinter into small fragments when dealt a blow. Usually, substances like rubber that can absorb a lot of energy by molecular conformational changes are, by the same mechanism, easy to stretch. Conversely, materials like ceramics ......ought to preserve a remarkable place." "It is an absorbing and timely conservation history of ANWR, " according to George Schaller, vice-president, Wildlife Conservation Society. "Kaye describes the wildlife, scientific, recreational and symbolic values that motivated those of us who worked for its establish...Baby fish 'smell their way home'
...developed sense of smell, but it may have a way of absorbing the local molecules and then recognizing their signature as "home" when it grows up a bit and is ready to settle," Mike says. "This evidence that individual coral reefs play such a key role in the emergence of new species is a fresh reason to take ...Climate change only one symptom of a stressed planet Earth
... terrestrial biosphere slow down climate change by absorbing half of the CO2 emitted to the atmosphere, but how long will this continue? We have evidence that these natural CO2 sinks are weakening in many regions of the world. We need to look at the Earth as a whole, and include the full interactions between c...Joslin researchers discover a surprising culprit in the search for causes of diabetic birth defects
...oning, the embryo cells act like a glucose sponge, absorbing glucose at a much higher rate than normal." Using mice that lacked Glut2 genes, which were developed by one of the study's co-authors, Bernard Thorens, Ph.D., of the Center for Integrated Genomics at the University of Lausanne in Switzerland, Josli...NASA predicts nongreen plants on other planets
...others. Gases in Earth's air also filter sunlight, absorbing different colors. As a result, more red light particles reach Earth's surface than blue or green light particles, so plants use red light for photosynthesis. There is plenty of light for land plants, so they do not need to use extra green light. But ...Climate policy: It's good to be in the 'RED'
...ts will survive and continue to act as a "sink" by absorbing carbon, provided that emissions can be kept under control . The efficiency of the tropical forest as a carbon sink might in fact diminish over time, but the authors expect that it will not disappear completely. The political challenges to reducing ...Envisat captures first image of Sargassum from space
...tosynthesis and convert it into organic carbon. By absorbing half of the carbon dioxide emitted into the atmosphere, the oceans have a profound influence on climate, making them major areas of interest for climate modellers. The discovery was made using the MERIS maximum chlorophyll index (MCI) which provi...Undergraduate research shows leaderless honeybee organizing
...lves acquiring received knowledge in other words, absorbing the past discoveries of scholars and scientists. But University of North Carolina at Charlotte senior biology major Andrew Pierce went beyond the textbooks and uncovered something previously unknown. Pierces discovery has to do with detecting a sig...Northern forests less effective than tropical forests in reducing global warming
...ts, presumably because trees and other plants were absorbing high amounts. Conversely, scientists had assumed a large amount of carbon was coming out of the tropics and moving through the atmosphere to be taken up in other regions. The new analysis of aircraft samples shows that this is not the case. ......ts, presumably because trees and other plants were absorbing high amounts. Conversely, scientists had assumed a large amount of carbon was coming out of the tropics and moving through the atmosphere to be absorbed in other regions. But the new analysis of aircraft samples shows that this is not the case. "...