Students take samples of water and the microscopic creatures within at the Alviso Marina County Park. (Image by Erika Cardema) At the Alviso Marina County Park, reddish-brown water laps at the edge of ...

DNA replication is happening continuously throughout the body, as many as trillions of times per day. Whenever a cell divides—whether to repair damaged tissue, replace old cells, or simply to help the ...

Emerging methods are improving the ability to identify even highly degraded human remains. By Damien Cave Reporting from Hanoi, Vietnam The world is facing an abundance of tragic events that produce ...