NASA will refill space shuttle Endeavour's external fuel tank tomorrow morning to test whether the leak that twice scrubbed the orbiter's launch earlier this month has been properly repaired. [More]

Some people who take the fast-acting sleep-aid zolpidem (Ambien) have been observed walking, eating, talking on the phone and even driving while not fully awake. Many often don't remember doing any of these activities the next morning. Similarly, this drug has been shown to awaken the minimally conscious into a conscious state. A new study may help explain why these "awakenings" occur.

Scientists in China are recommending that the Chinese government consider phasing out the direct burning of traditional chunks of coal in millions of households. It suggests that the government substitute coal briquettes and improved stoves for cooking and heating to help reduce the country's high air pollution levels.

Scientists have developed an electrochemical process for coating metal implants which vastly improves their functionality, longevity and integration into the body.

Physicists have announced the observation of a new particle, the Omega-sub-b (Ω_b). The particle contains three quarks -- two strange quarks and a bottom quark (s-s-b). It is an exotic relative of the much more common proton and has about six times the proton's mass.

It was Darwinian theory that did away with the werewolf. The publication of Charles Darwin’s On the Origin of Species exactly 150 years ago focused minds on a different kind of monster – ape-men such as the Yeti, Bigfoot and Sasquatch. From then onwards, werewolves were relegated to a fictional footnote.

A new computer model can help solve a problem that has plagued drug companies trying to develop promising new treatments made of antibodies: Such drugs have a relatively short shelf life because they tend to clump together, rendering them ineffective.

Pig heart valves used to replace defective aortic valves in human patients failed much earlier and more often than expected, says a new report from cardiac surgeons. This is the first report to demonstrate this potential problem, the researchers say.

Microscopic analysis of scratches on dinosaur teeth has helped scientists unravel an ancient riddle of what a major group of dinosaurs ate -- and exactly how they did it! Now for the first time, a study led by the University of Leicester, has found evidence that the duck-billed dinosaurs -- the Hadrosaurs -- in fact had a unique way of eating, unlike any living creature today.

A new technique for transplanting the ovaries of women who have lost their fertility has been developed. The new, two-step method of ovarian transplant has produced excellent results in women whose ovaries have been frozen because of cancer treatment.