The solar system may have a ninth planet after all.
Scientists have found grisly evidence of a massacre in Kenya about 10,000 years ago, providing rare evidence of violence between groups in ancient hunter-gatherer societies.
For more than a century, two mysterious tree frog specimens collected by a British naturalist in 1870 and housed at the Natural History Museum in London were assumed to be part of a vanished species, never again found in the wild. Until now.
A tiny but scary-looking marine critter that died out with the dinosaurs, caught prey with the aid of two monstrous eyes -- each a quarter of its body length, scientists said Tuesday.
Happiness is a state of mind, the gurus say.
The brightest exploding star ever detected has bewildered scientists with its incredible power, shining 570 billion times brighter than the sun and twice as potent as any known supernova, scientists said Thursday.
The remains of a mammoth that was hunted down about 45,000 years ago have revealed the earliest known evidence of humans in the Arctic.
E-cigarettes, touted as an aide for giving up tobacco, in fact lowers the odds of quitting success, claimed research Thursday that was immediately criticized as flawed.
A study by the University of Maryland touting the benefits of a small company's chocolate milk is raising concerns about the potential conflicts-of-interest that can arise when food makers collaborate with schools on such efforts.
Far into the heart of Brazil's Minas Gerais state, rural miners explore the massive craters left behind by giant mining companies in search of diamonds.