WASHINGTON Roughly 80 million years ago in the shallow inland sea that once split North America into eastern and western land masses, a fearsome 33-foot-long (10-meter-long) marine reptile with powerful jaws and tremendous bite-force was one of the apex predators.
WASHINGTON Scientists are providing a fuller understanding of the essential role that sleep plays in brain health, identifying an abrupt transition at about 2.4 years of age when its primary purpose shifts from brain building to maintenance and repair.
WASHINGTON Male and female whale sharks - filter-feeding marine behemoths - grow at different rates, with females doing so more slowly but getting much larger than the guys, according to research that offers deeper insight into the biology of Earth's largest fish. | Video
WASHINGTON Scientists said on Monday they have detected in the harshly acidic clouds of Venus a gas called phosphine that indicates microbes may inhabit Earth's inhospitable neighbor, a tantalizing sign of potential life beyond Earth. | Video
WASHINGTON, Sept 14 Scientists said on Monday
they have detected in the harshly acidic clouds of Venus a gas
called phosphine that indicates microbes may inhabit Earth's
inhospitable neighbor, a tantalizing sign of potential life
WASHINGTON Dark matter, mysterious invisible stuff that makes up most of the mass of galaxies including our own Milky Way, is confounding scientists again, with new observations of distant galaxies conflicting with the current understanding of its nature.
WASHINGTON Scientists have completed the broadest search to date for extraterrestrial civilizations by scanning roughly 10.3 million stars using a radio telescope in Australia, but have found nothing - not yet, at least.
WASHINGTON The African wild dog distinguishes itself from rival predators like lions and hyenas by using the unique hunting style of chasing prey over long distances until the target collapses from exhaustion, instead of relying upon speed, strength or stealth.
WASHINGTON When the bones of the early armored dinosaur Scelidosaurus were unearthed in 1858 in west Dorset, England, they comprised the first complete dinosaur skeleton ever identified.