Ker Than

New radar maps reveal Angkor's urban sprawl.

Neanderthals and Homo sapiens might not be the only human species to once coexist.

Increasingly, signs point to a "yes."

Two Russian ships have reached the North Pole and will claim it for their country.

Dinosaurs took several million years to become the dominant land animals.

Genes influence whether you can listen to two conversations at once.

Chimps use 75 percent more energy walking than humans.

An unaware public might have been exposed to high doses of radiation.

The mild eruptions of some volcanoes are driven by rising air bubbles.

Female sparrows prefer new bird songs over old ones.

Scientists combine the parts of different viruses to kill bacteria.

Greenland was once carpeted in lush forests, a new study shows.

Covering vegetated land with asphalt reduces the amount of moisture in the atmosphere.

The achievement could lead to synthetic organisms created from scratch.

Study busts myth that ultrasound subdues the prey.

A new study claims using circumcision to protect against HIV is overrated.

Scientists have found a layer of melted rock beneath America’s Southwest.

Prey animals are not necessarily hard-wired to fear their enemies.

The health benefit the surgery confers might be tempered by a loss of the penis’ most receptive regions.

Sea sponges have many of the genes needed to make a nervous system; despite not having any themselves.

Origins of some of the world's most famous imaginary beasts traced.

More than 14,700 letters written both by and to the famous naturalist are now available for online reading.

Artificial mucus makes electronic sniffers work better and faster.

Eruptions that sundered Greenland from western Europe set off intense global warming 55 million years ago.

Scientists found bits and pieces of Earth's first known trees in various places, finally learning what they looked like.