Published November 28, 2011
Ancient rock deposits, laid down between two massive ice ages, reveal the oldest known fossils for two types of single-celled creatures: Tube-shelled foraminifera and hairy, vase-shape ciliates.
Published November 01, 2011
Once laid to rest, the remains of many who died in medieval Europe were not left in peace. As much as 40 percent of graves from the mid-fifth to mid-eighth centuries appear to have been disturbed after burial.
Published October 24, 2011
Psychopaths are known to be wily and manipulative, but even so, they unconsciously betray themselves, according to scientists who have looked for patterns in convicted murderers' speech as they described their crimes.
Published October 06, 2011
A whole universe of mysterious viruses remains hidden in our world, according to a new study that finds evidence of an immense and previously unknown variety of viruses living in raw sewage.
Published September 08, 2011
King crabs, with their crushing claws and ecosystem-altering habits, have shown up in the warming waters of a deep basin in the Antarctic continental shelf, raising worries they'll hurt other species there.
Published August 01, 2011
At a time when dinosaurs ruled the land, mosasaurs, a type of swimming reptile related to modern Komodo dragons, came to dominate the seas. Within the span of roughly 27 million years, these predators transformed from an animal with limited swimming ability and limbs still meant for walking into a sleek, fishlike form.
Published July 11, 2011
Buried deep beneath the sediment of the North Atlantic Ocean lies an ancient, lost landscape with furrows cut by rivers and peaks that once belonged to mountains. Geologists recently discovered this roughly 56-million-year-old landscape using data gathered for oil companies.
Published July 08, 2011
Diggers at an excavation in west-central Colorado turned up almost 5,000 large bones in seven weeks from mammoths, mastodons, giant ground sloths, bison, horses, deer and camels. They also uncovered thousands and thousands of smaller remains, like rodent teeth and salamander vertebrae.
Published April 30, 2011
Pupfish with unusual diets, like biting off the scales of other fish, show some of the fastest rates of evolution known, according to a new study.
Published April 28, 2011
Climate change may give America's venomous brown recluse spiders a choice: Move to a more northern state or face dramatic losses in range and possible extinction, a new theoretical study suggests.