Distinguishing legally from illegally traded wildlife products using the size, shape and origin of the sample often fails when samples are of young individuals or wildlife parts, such as a teeth, ...

The human genome consists of 3 billion base pairs, and when a cell divides, it takes about seven hours to complete making a copy of its DNA. That's almost 120,000 base pairs per second. At that ...

Tonight on "NBC Nightly News With Lester Holt," Morgan Radford visits a police department using a new DNA tool that could revolutionize police investigations, but is ...