They don't belong in Georgia, but the Argentine tegu has managed to invade more than 20 counties over the last few years.

"Springtime welcomes back life with migrating birds, the birth of young mammals, and the mating calls of amphibians," Darci ...

Replacing animal tests does not mean putting human patients at risk ... An innovative technique called microdosing can also be used in volunteers to measure how very small doses of potential new drugs ...