Rafting rodents from Africa may have been ancestors of South American species
...cular techniques to address evolutionary questions posed decades ago primarily by paleontologists. "Recent discoveries in molecular evolutionary biology are changing significantly the traditional ideas about mammalian evolution," Honeycutt says. "For example, in the late 1960s and early 1970s Wilson and Sa...IIT develops technology that may help doctors identify blood pathogens faster
...at different experience levels to solve a problems posed by companies or IIT faculty. Morong is going into his fourth year as a chemistry and physics major at IIT. He first got involved with the e-nose project through joining the e-nose IPRO as a freshman. Morong helped develop the software that runs th...Genomes on 'chips' boon to cancer research
...he cell are degraded without being replaced. This posed an interesting question to the researchers - If flavopiridol works in such a general way, how does it manage to kill cancer cells in preference to normal cells? The answer lies in the differences between normal and cancerous cells, which Staudt and ...Mercury at bottom of central park lake linked to coal burning in NYC
...emission of mercury as the greatest health concern posed by coal burning. Coal-fired plants in the United States emit an estimated 52 tons of mercury into the atmosphere per year. The EPA believes a plausible link exists between the emission of mercury from coal-fired utilities and the amount of mercury fo...Scientists examine the seas our ancestors fished to better understand today's changing oceans
...urtles and fishes, with shellfish so abundant they posed a hazard to navigation. Only in a Jules Verne classic fantasy? Not so. A group of scientists from several research institutions has recently depicted that such rich ocean life existed in the not-so-distant past. Writing in the journal Science, the sc......s abundances of oysters and shellfish so vast they posed hazards to navigation. The new data also show that historical overkill of this marine life triggered current ecological collapses -many of which have been mistakenly attributed to pollution. "We started out to study everything that people had ever do...Top environment scientist calls for early warning system for global change.
...pecies and habitats. Speaking about the challenges posed by the creation of an early warning system, Dr Steffen will say; 'The challenges to develop such a system are many - harmonisingapproaches, long term funding, international cooperation - but they m...Microbiologists find a new source of nitrogen fixation
...e despite a nitrogen-poor diet of plant matter had posed a decades old puzzle. Although nitrogen gas makes up 80 percent of the air we breathe, only certain microbes can capture and use it for growth - a process called nitrogen fixation. Once nitrogen gas becomes "fixed" by microbes, it enters the food cha...Doctors aware of Tylenol-related liver risk - but is the public getting the message?
... their knowledge about the difference in the risks posed by acetaminophen and NSAIDs. For example, only 61 percent knew that more people die each year from the toxic effects of NSAIDs than die from liver toxicity caused by acetaminophen. And just under half knew that most cases of liver toxicity from aceta...Rensselaer effort to pull mussels at Lake George looks promising
...ope to do is educate the public about the problems posed by zebra mussels. Theyre more than a nuisance. By taking a little extra time to inspect their boats and clean them, people can play a major role in preventing the spread of zebra mussels to the Queen of American Lakes, Nierzwicki-Bauer said....Debate over genetically modified food gets an educational home on the web
...tion, a resource library, and answers to questions posed to scientists by editors at Science. The site has sections for educators, scientists and the general public. The education section allows teachers to design and post curriculum projects on-line, and encourages students to produce their own document......t formation in vertebrates. To answer the question posed in the headline by Celion Dion, the vertebrate heart will beat in a position defined by low concentrations of Wnt activity and high concentrations of both Wnt inhibitors and BMP. These results unravel a surprisingly elegant mechanism of heart formati......ried out. Dr Nargund said that ovarian stimulation posed significant problems. Most cycles of treatment in the UK, for example, were not funded by the National Health Service and the additional bill for drugs and extra procedures could add significantly to the cost for couples.Disposal of extra embryos gen...Campaign to protect critically endangered beluga sturgeon
...t. In response to the triple threat to sturgeon posed by overfishing, habitat loss and pollution, three leading environmental groups today announced a campaign to protect and help restore the world's remaining sturgeon populations. The initial focus of the groups' recommendations is on beluga, Russia......elieve will answer some of the remaining questions posed by their earlier results. The new trial, which i... new trial is intended to answer some of the whys' posed by those original studies," Blumenthal explained. "We are very interested in evaluating behavioral...UF technique detects tiny, potentially harmful airborne particles
...s displays ended. The increases were so small they posed no threat to human health, but the test demonstrated the technique could also detect similarly low levels of more harmful particles, such as arsenic, chromium or lead. "The test really demonstrated the ability of this technique to measure particulat...Updated study shows baseline annual diet costs less for women than men
...ns Research Milestone The economist George Stigler posed and solved what became know as Stigler's Diet Problem in 1945. The solution of this problem helped to show that linear programming, a dazzling but untested theory developed in 1947 for solving complex military problems, would work in practice. Exte...Robots eavesdrop on cellular discussions
...Fields' work adds an essential piece to the puzzle posed by genetic information that appears to be an enormous jumble of letters and words," he added. Imagine, for instance, visiting a library full of books that you couldn't read. In a sense, this is the scientific dilemma facing biologists across the glo...Today's Science for America's Tomorrow: the USGS FY 2001 Budget
...ms to help America's communities respond to issues posed by urban growth. Recognizing that all levels of government face serious challenges associated with the sustained growth and development of urban regions, USGS will develop predictive models based on historical trends for areas including Seattle, San...Licensing procedure for genetically modified organisms turns out to be fallible
...in assessing thedangers to man and the environment posed by modified organisms. As a start, theyhave drawn up a definition of the hazards posed by a modified organism, according towhich a danger exists if "it carries an agent P which can produc...