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Rapidly deteriorating economic conditions in Alabama played a major role in National Coal of Alabama Inc.'s recent default on a $60 million line of credit, said the coal mining company.

High Levels of Ammonium Found in 16 Parks, Including Yellowstone

The National Association of Governors is the latest legislative group to support the American Institute of Architects' goal of zeroing out new and renovated buildings' greenhouse gas emissions by 2030. [More]

Officially inaugurated on 6 March 1955, Casablanca's Stade Mohamed V has firmly established itself as the principal home stadium of the Moroccan national side. But the Atlas Lions are not the only...

Neil Armstrong and Michael Collins, both 78, and Edwin 'Buzz' Aldrin, 79, went to the National Air and Space Museum and used the rare appearance together to press calls to head for new frontiers in space.

Scientists have long suspected that the sex chromosome that only males carry is deteriorating and could disappear entirely within a few million years, but until now, no one has understood the evolutionary processes that control this chromosome's demise. Now, a pair of Penn State scientists has discovered that this sex chromosome, the Y chromosome, has evolved at a much more rapid pace than its partner chromosome, the X chromosome, which both males and females carry. This rapid evolution of the Y chromosome has led to a dramatic loss of genes on the Y chromosome at a rate that, if maintained, eventually could lead to the Y chromosome's complete disappearance. The research team, which includes Associate Professor of Biology Kateryna Makova, the team's leader, and National Science Foundation Graduate Research Fellow Melissa Wilson, will publish its results in the 17 July 2009 issue of the journal PLoS Genetics. 'There are three classes of mammals,' said Makova, 'egg-laying mammals, like t

Scientists have a better understanding of what causes an abnormal number of chromosomes in offspring, a condition called aneuploidy that encompasses the most common genetic disorders in humans, such as Down syndrome, and is a leading cause of pregnancy loss. To pinpoint what goes awry in these cases, researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of Tennessee, Knoxville studied mice. They found that if a mother's egg cell has a mutation in just one copy of a gene, called Bub1, then she is more likely to have fewer offspring that survive to birth.

Scientists at the U.S. Department of Energy's (DOE) Lawrence Berkeley National Laboratory have developed a fast and efficient way to determine the structure of proteins, shortening a proc...

FEI Company (Nasdaq:FEIC), a leading provider of atomic-scale imaging and analysis systems, today announced the release of the Tecnai Osiris(tm) scanning/transmission electron microscope (...

Battelle and the national laboratories it manages or co-manages for the U.S. Department of Energy have won 24 of the prestigious 2009 R+D 100 Awards, four more than it won in 2008. Winn...