Two of ESO's telescopes captured various stages in the life of a star in a single image - a cosmic ghost.

  U.S. researchers have manipulated neurons in mice to light up in a rainbow of fluorescent hues, creating a powerful tool for mapping out the brain's complicated wiring plan, they said on Wednesday.

  A potent clot-busting substance originally extracted from the saliva of vampire bats may be used up to three times longer than the current stroke treatment window - without increasing the risk for additional brain damage.

  Burdensome though it is, the national debt never killed anyone. But the national sleep debt is another story ...

  US astronomers have discovered the biggest black hole orbiting a star 1.8 million light-years from Earth in the constellation Cassiopeia, with a record-setting mass of 24 to 33 times that of our Sun, NASA said Tuesday.

  Three giant planets that sizzle as they circle their suns have been discovered in a faraway corner of the galaxy.

  Giant hyenas, sabretoothed cats, giraffes and zebras lived side by side in Europe 1.8 million years ago.

  Werewolves notwithstanding, the full moon does not influence the frequency of epileptic seizures, reports a University of South Florida study.

  New research in carbon nanotechnology could give those in the line of fire materials which can bounce bullets without a trace of damage.

  About 10 percent of Americans aged 71 and up, or 2.4 million people, have Alzheimer's disease and 1 million more have some other form of dementia, researchers said on Tuesday, offering figures lower than some widely cited estimates.