WASHINGTON Overcrowding. Violence. Infectious diseases. Environmental degradation. It may sound like the worst of modern mega-cities.
WASHINGTON Marijuana chemical residue has been found in incense burners apparently used during funerary rites at a mountainous site in western China in about 500 BC, providing what may be the oldest evidence of smoking cannabis for its mind-altering properties.
WASHINGTON A dramatic scene from the twilight of the age of dinosaurs - a T. rex feasting upon a horned plant-eater named Triceratops - will greet visitors when an ambitious new fossil hall opens on Saturday at the Smithsonian Institution's National Museum of Natural History.
WASHINGTON Dwelling in the dark ocean depths, the dragonfish is a frightful marvel that would fit nicely into any horror movie, boasting exotic adaptations such as virtually transparent fangs that help it thrive in this extreme environment.
WASHINGTON Microfossils of a globular spore connected to a T-shaped filament excavated in an Arctic region of northwestern Canada represent the oldest-known fungus, a discovery that sheds light on the origins of an important branch in Earth's tree of life.
WASHINGTON The moon may be dynamic and tectonically active like Earth - not the inert world some scientists had believed it to be - based on a new analysis disclosed on Monday of quakes measured by seismometers in operation on the moon from 1969 and 1977.
WASHINGTON While people and other vertebrates are color blind in dim light, some deep-sea fish may possess keen color vision to thrive in the near total darkness of their extreme environment thanks to a unique genetic adaptation, scientists said on Thursday.
WASHINGTON A fossil unearthed in northeastern China of a feathered dinosaur a bit bigger than a blue jay that possessed bat-like wings represents a remarkable but short-lived detour in the evolution of flight and the advent of birds, scientists said on Wednesday.
WASHINGTON A jawbone found in a cave on the Tibetan Plateau in China is providing surprising insights into Denisovans, the enigmatic extinct cousins to Neanderthals and our own species, including that they were pioneers at enduring high-altitude environments.
WASHINGTON Centrist Republican Richard Lugar, a soft-spoken foreign policy powerhouse who championed nuclear nonproliferation during 36 years in the U.S. Senate, died on Sunday at age 87.