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On a submersible dive off the Bahamas, Mikhail V. Matz of the University of Texas at Austin and several colleagues were seeking big-eyed, glowing animals adapted to darkness.

A brilliant green tree frog with huge black eyes, jumping spiders and a striped gecko are among more than 50 new animal species scientists have discovered in a remote, mountainous region of Papua New Guinea.

Several states move to block expanded stem cell research following executive order from Obama.

Scientists in California say they're trying to replicate the power of the sun by firing laser beams at a tiny pellet of hydrogen. Physicists at the National Ignition Facility in Livermore say the nuclear fusion experiments may offer the world a clean source of energy, The Times of London reported Sunday. The hydrogen pellet will be hit with 192...

A group of monkeys has been observed by researchers showing their young how to floss their teeth - using human hair.

NASA has postponed the launch of space shuttle Discovery because of a gas leak. The leak of gaseous hydrogen occurred as the launch team was filling the external fuel tank for liftoff Wednesday night. The seven astronauts had yet to board the spaceship.

As President Obama lifted the ban on the Bush administration's limits on embryonic stem-cell research, he said scientific decisions must be "based on facts, not ideology."

A male chimpanzee provides compelling proof that animals may be able to plan for future events and moods.

Mars appears to have had running water on its surface about one million years ago, according to new evidence.

Theoretical calculations done by astrophysicists at the Hebrew University in Jerusalem led by Professor Avishai Dekel, show that low mass galaxies can form when intergalactic gas streams into dark matter haloes and not by intergalactic gas heated by a virial shock to millions of degrees.