Humans spend greater than 90 percent of their time indoors, but we're never alone there.

Darwin made adaptation to the environment the key property of evolved living creatures. That's all natural selection can do.

It took the Earth 10 million years to recover from a cataclysmic event that wiped out 90% of plant and animal life some 250 million years ago, according to new evidence presented Sunday in the journal Nature Geoscience.

Understanding the genetic diversity within and between populations has important implications for studies of human disease and evolution.

A large survey of human genetic variation, published today in the online version of the journal Science, shows that rare genetic variants are not so rare after all and offers insights into human diseases.