What do you mean throw out the food guide pyramid?
...of exercise a day This report "is a whole paradigm shift on how we see our activity. Johnson points out that it's all simply a matter of needing to balance our energy output with our food intake. "Americans are so sedentary that their recommended calorie levels are really low so low that it can be very di...AAAS at the BA: Whale food, winners and losers in Antarctica and solar insights
...3 degrees Celsius between 1980 and 1995. While the shift doesn't sound dramatic, it set off rapid changes in the lakes' ecologies, making them more nutrient-rich, increasing the number of sun-dependent plankton and extending the open water periods for 4 weeks. Warming of Signy Island lakes was found to be...Hibernators may hold the key for better human organ preservation
...ating ground squirrels annually undergo a dramatic shift in their physiology. This state, called "torpor," allows hibernators to use minimum amounts of energy to sustain themselves by using stored body fat throughout the winter. The condition is further characterized by, a heartbeat slowed to just a few be...Discovery of chromosome-capping activator could aid cancer research
...y a minor role in its activity. "This is really a shift in the way we were thinking," said Zakian. "When we went into these experiments, every expectation was that we were going to confirm the existing model." It remains to be seen whether the Est1 works the same way in human cells as it appears to in ye...Trees encroaching grasslands may lock up less carbon than predicted
...tissue." The Nature report said "the most notable shift in carbon from below-ground to above-ground pools was at the wettest site," in Engeling, Tex. "Such shifts make carbon stocks more vulnerable to loss from fire, biomass (wood) harvesting and other disturbances."...Retroviruses shows that human-specific variety developed when humans, chimps diverged
...at are abundant in the human genome, in the actual shift from more rudimentary primates to modern human beings. The research was just published in the journal Genome Letters. "There is a growing body of evidence that transposable elements have contributed to the evolution of genome structure and function ...Sex-specific genes for depression
...ifferences in mortality statistics resulted from a shift toward younger ages at death across the lifespan, including a five-fold increase in the proportion of individuals who died in the first year of life. This research may provide an important step toward changing the way doctors diagnose and treat major...Multiple births - their risks and how to prevent them
...doctors that self-regulation is necessary and to a shift in public opinion, fuelling demands to change current clinical practice." French fertility experts find multiple pregnancies pose major risks to babies' lives and health French fertility experts* have carried out an analysis of nearly 25,000 preg...Science editor explores the role of environmental change on global security
...ed, then plainly there would be a dramatic climate shift in temperate regions, Kennedy said a situation that could occur if the salinity of the Atlantic was lowered by a big injection of fresh water in the north as the result of rapidly melting glaciers. "All that, I think, is very much at the stage of th...UCLA scientists image how Parkinsons genes misfire in mice
...he mice with Parkinsons disease showed an abnormal shift in gene activity. The patterns of gene expression had moved and were not located in the brain where they should have been. This approach identifies which genes play a role in abnormal brain function and where they are located, said Smith, UCLA assist...Warming temperatures may freeze North American timber industry
...evelopmenteconomics at Ohio State University. This shift in timber productioncould have serious ramificationsfor growers in temperateregions, such as NorthAmerica, the former SovietUnion, China, Australia, NewZealand and parts of Europe,areas that currently supply 77percent of the world's industrialtimber....Hatchery salmon may threaten wild populations
...might be an even better way to help counteract the shift toward captive traits.When Ford extended the model to account for the reproductive rate and other demographic factors, he found that hatchery-supplemented wild populations develop captive traits faster when their habitat is limited. This suggests tha...Research shows older children, adolescents grew heavier in Brazil, China, U.S. over past 30 years
...attempted to fill a gap by exploring trends in the shift from underweight to overweight among older children ages 6 to 9 and adolescents ages 10 to 18." Between 1971 and 1997, excessive weight tripled as a percentage of all children and teens in Brazil, from 4.1 percent to 13.9 percent, and almost doubled ...Two genetic suspects are identified in the mystery of why we need to sleep
...that eliminate or minimize the impacts of: Night shift work Sleep disorders Jet lag to name a few The next research phase of Shaw and his colleagues, Ralph Greenspan and Donald Robinson, at The Neurosciences Institute, is to pin down the mechanisms by which these genes increase and/or protect agains...A new role for a versatile stem cell
Recent work has prompted a dramatic shift in thinking about cell regeneration, as researchers have come to appreciate the ability of adult stem cells to adopt the fates of many cell types, not just those in a particular tissue or a specific developmental lineage. The Verfaillie laboratory ha...Story tips from the Department of Energys Oak Ridge National Laboratory, May 2002
...e in crop yield, the researchers claim. That and a shift from traditional crops to switchgrass, hybrid poplar and willow could offset projected 2020 Persian Gulf oil imports used for gasoline with only limited impacts on food production. [Contact: Marie Walsh]...Research highights from Pacific Northwest National Laboratory
...around the world determine if they are detecting a shift in the earths crust or the results of a nuclear test detonation....Diabetes tied to altering of the heart's circadian clock
...d with control hearts. More specifically, a phase shift and/or early upswing in the rhythm (approximately three hours early) was observed for bmal1, the per genes, the cry genes, and the three output genes (dbp, hlf and tef) in the heart during diabetes. This alteration in the circadian clock of the hear...Massive icebergs may affect Antarctic sea life and food chain
...ifts out of the Ross Sea. In the springtime, winds shift in the area of the Ross Seaand clear away sea ice, forming the Ross Sea polynya (an areaof open water surrounded by sea ice) where phytoplanktonflourish. However, when large icebergs calve, such as B-15,sea ice is not as easily moved by winds, severe...