Astronomers using the Subaru telescope in Hawaii have looked 60 million years further back in time than any other astronomers, to find the most distant known galaxy in the universe. In doing so, they are upholding Subaru's record for finding the most distant and earliest galaxies known. Their most recent discovery is of a galaxy called I0K-1 that lies so far away that astronomers are seeing it as it appeared 12.88 billion years ago.

Demand from rich Chinese for Indian tiger pelts and parts used in traditional medicine fuels poaching and may lead to the extinction of the species in the wild, conservationists have warned.

Trade of tiger pelts from India into Chinese-ruled Tibet was flourishing despite laws banning the move, a report released in New Delhi by two conservation groups said Wednesday.

The Wildlife Protection Agency and Environment Investigation Agency estimate only 1,500 to 2,000 wild Royal Bengal Tigers are left in India.

It's a mystery why the speed and complexity of evolution appear to increase with time. For example, the fossil record indicates that single-celled life first appeared about 3.5 billion years ago, and it then took about 2.5 billion more years for multi-cellular life to evolve.

For soldiers injured in combat today, the survival rate is 90 percent or higher--a significant improvement even since the Gulf War in the early 1990s, according to Col. W. Bryan Gamble, M.D., Commander of Landstuhl Regional Medical Center in Germany. Dr.

New research suggests that choosing a mate may be partially determined by your genes. A study published in Psychological Science has found a link between a set of genes involved with immune function and partner selection in humans.

Vertebrate species and humans are inclined to prefer mates who have dissimilar MHC (major histocompatibility complex) genotypes, rather than similar ones. This preference may help avoid inbreeding between partners, as well as strengthen the immune systems of their offspring through exposure to a wider variety of pathogens.

The study investigated whether MHC similarity among romantically involved couples predicted aspects of their sexual relationship.

What influence does the variation in estrogen level have on the activation of the female brain? Using functional Magnetic Resonance Imaging, Jean-Claude Dreher, a researcher at the Cognitive Neuroscience Center (CNRS/Université Lyon 1), in collaboration with an American team from the National Institute of Mental Health (Bethesda, Maryland) directed by Karen Berman, has identified, for the first time, the neural networks involved in processing reward-related functions modulated by female gonadal steroid hormones.