The planet might once have been dominated by microbes that used a molecule other than chlorophyll to harness Sunâ€™s rays.
The relics of Joan of Arc are not the remains of the fifteenth-century French heroine and saint, but rather manufactured items made from an Egyptian mummy.
An ancient member of the human family gets a digital makeover, revealing a mug that looks more apelike than previously thought. But not everyone is buying the result.
Experiments with worms suggest humans might one day be able to eat themselves to a longer and healthier life.
The new species were unearthed in Mongolia. One ranks among the smallest non-avian dinosaurs ever discovered.
Scientists have some lab mice seeing red. The animals have had their vision genetically upgraded and can now see colors invisible to normal rodents.
Scientists have identified two factors that play important roles in the fitful process of evolution.
An ancient arboreal lizard coasted through the air on a wing-like membrane stretched across elongated ribs, a new fossil reveals.
New species evolve faster at high latitudes than in the tropics, but they also go extinct faster, a new study suggests.
Earthquake faults are worn smooth over time by friction like the brake pads of an old car, according to a new study.
The long childhoods and delayed maturity common in modern humans might be a recent development that first emerged only a few thousand years ago in early members of our species living in Africa.
Solar activity can affect Earth's climate, but the idea that the current global warming trend is fueled by the sun is "nuts," one researcher says.
If the French had teeth like the Iwasaki snail-eating snake, they wouldnâ€™t need tongs and tiny pitchforks to eat escargot.
The giant palm salamander of Central America shoots out its tongue with more instantaneous power than any known muscle in the animal kingdom.
Scientists have discovered a large area in the middle of the Atlantic Ocean where the Earthâ€™s crust is missing and the mantle is exposed.
Scientists find new evidence for a link between global warming and stronger hurricanes in old satellite data.
Scans of Earth's deep interior reveal a vast water reservoir beneath Asia that is at least the volume of the Arctic Ocean.
VIDEO: New "superbots" plug into each other like Lego-blocks and simulate humans, caterpillars or wheels. And they can find each other and hook up.
Definitely don't try this at home. Scientists have documented the dangers, from "sword throat" to a scissored esophagus.
A new exhibit on human evolution opening this weekend at the American Museum of Natural History in New York explores where humans came from and what makes us distinct from other animals.
The planet has endured far more dramatic climate change in the past fueled by other forms of life. But rarely if ever has the change been so rapid.
The find supports the idea that Europe and North America were once connected by a series of temporary land bridges that allowed dinosaurs to cross.