One animal's predator is often animal's prey, but not with these species. Many of them are too tough to be taken down, though some have stranger tactics.

Teeth are extreme: they evolved at roughly the same time as bones, and they’re the hardest thing in the human body. So why ...

There’s something profoundly different about watching an elephant amble across the savanna versus seeing one pace behind ...

Piperacillin, an antibiotic in the same class as penicillin, effectively cured mice of Lyme disease at 100-times less than the effective dose of doxycycline, the current gold standard treatment. At ...