Seafloor creatures destroyed by ice action during ice ages
...be rewritten. Our next task is to reconstruct what happened in Antarctica during these periods of climate change and study the genetic and biological links between deep sea and shallow water communities.'...Your brain cells may 'know' more than you let on by your behavior
...ot of errors," recalls Albright. "We wondered what happened in the brain when the monkeys made the wrong choice, although they had apparently learned the right pairing of the symbols." So, while the monkeys tried to remember the associations and made their error-prone choices, the scientists observed signals...New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia
...e work in Wolfenden's laboratory by analyzing what happened to the pesticide's residue at various temperatures and then extrapolating the results to room temperature to see how long the pesticide would last if the bacteria weren't busy digesting it in the blink of an eye. "It was just amazing that this enzyme...Conference examines role of chromosome changes in cancer
...r that same year, she found that something similar happened in patients with chronic myelogenous leukemia; a crucial segment of chromosome 22 broke off and moved to chromosome 9, where it did not belong. At the same time, a tiny piece of chromosome 9, which included an important cancer-causing gene, had move...'New' science gleans knowledge from ancient lands and societies
... find other techniques to begin to understand what happened in the more distant past. Once we can determine ho... sustainable state." Thus, through studying what happened in ancient times, van der Leeuw added, "we can get a clearer picture of what Earth was like when it ...Abalones along Pacific coast may owe their huge, dinner-plate size to sea otters
...es. "One of our major conclusions is that this has happened relatively recently in evolutionary time, starting around 5 million years ago." Of eight abalone species now living along the Pacific coast from Baja California to British Columbia, six - the red, black, pink, white, green and flat - are all 7 inches...UF Researcher: Global warming dramatically changed ancient forests
... But until now, no clues were available as to what happened to plants during this shift, considered one of the most extreme global warming events during the Cenozoic, the "Age of Mammals," Bloch said. "It was very puzzling because it looked like there was nothing going on with plants, which was rather strange...New microscope allows scientists to track a functioning protein with atomic-level precision
...repeatedly bouncing off a wall, and every time you happened to bounce a bit farther away, somebody came in and moved the wall up behind you, so you couldn't bounce so far back. You'd wind up drifting forwards, even though your own motion was mostly random," Block explains. In the Nature study, Block and hi...Avian flu in perspective: New England Journal article reviews 'spectacular' findings
...ly avian virus from birds to humans. This is what happened during the 1918 Spanish flu, the deadliest of last century's three pandemics. A "reassortment" virus that mixes bird flu with already circulating human influenza strains to create a new strain. This was the case during the 1968 Hong Kong flu pande...Normal chromosome ends elicit a limited DNA damage response
...at, "it would be very unhealthy for the cell if it happened at any other time." In addition, Verdun and his colleagues found that several well-known members of the DNA damage response machinery recruited by the now unprotected telomeres - congregate at the tips of chromosomes. "We believe that the localizat...New study shows animal family tree looking bushy in places
...ture that some very interesting evolutionary stuff happened here." It is not as if evolution of new forms of ...would the mammalian radiation look like had it not happened 100 million years ago, but instead 500-600 million years ago? "The picture we get is surprisingly si...New study expands understanding of the role of RNA editing in gene control
...erning the transcription process, but gene control happened at the level of the DNA. In the past few years, however, evidence for a more nuanced understanding of the total genetic system has steadily accumulated. Researchers at The Wistar Institute and elsewhere have been teasing out the details of a process ...Unified physics theory explains animals' running, flying and swimming
...like if you started evolution over on earth, or it happened on another planet -- with a given gravity and density of their tissues, the same basic patterns of their design would evolve again," Marden said....Study finds evolution doesn't always favor bigger animals
...ooled. When temperatures remained stable, not much happened to body size. "These data show a very nice correlation between temperature and body size," said Kaustuv Roy, a professor of biology at UCSD and a coauthor of the paper. "Although not the most glamorous of fossils, deep-sea ostracodes are very usefu...NJIT solar physicists report paradox: Less sunlight, but temps rise
...unlight being reflected back into space." What has happened is that the low, cooling clouds have decreased during the most recent years, while high, warming clouds have increased even more. Thus, the cloud data also reveal an increase in total cloud amount during 2000-2004. That increase is consistent with t...Genetic evidence shows colonialists pushed orang-utans to brink of extinction
... could distinguish between population decline that happened thousands of years ago and much more recently". The team of researchers sampled the faeces from two hundred orang-utans in the Kinabatangan Wildlife Sanctuary in Sabah, northern Borneo and DNA profiling was used to discover the most likely history o...Study of tropical forests worldwide reveals that nature encourages diversity
...e than once, so that the researchers know what has happened to hundreds of thousands of trees from one census to the next," says Stuart Davies, the recently appointed director of the Center for Tropical Forest Science. "These tropical forest observatories, along with others in our network, represent some of t...Parachuting allows krill to eat and run
...idered to be large because it was assumed that DVM happened just once every 24 hours. In the new work, the researchers found that krill are capable of many migrations each night. What is more, the downward migration may be particularly rapid as the krill fan out their swimming legs and enter a controlled des...Less is more, gene study shows
...rs ago---which is consistent with the idea that it happened not long before humans began migrating out of Africa 40,000 to 60,000 years ago. As for exactly how lacking the gene---which appears to be essential in all mammals except humans---became more advantageous than having the gene, Zhang believes he has a...Ethiopian water programme raises birth rate; viral encephalitis study
... there will be a reduction in birth rate. This has happened in many countries but, in rural Africa, birth rates remain high and the population is growing rapidly. Ethiopia is an example; the rising population and the slow growth in the economy have led to repeated humanitarian crises. A further finding in th...