Add Yahoo as a preferred source to see more of our stories on Google. A Texas angler caught a South American piranha relative with "human teeth" at a local lake Sunday. The a-pacu-lypse is upon us. As ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...

View post: Winter Storm Warning Map Shows Every State’s Valentine’s Day Weather A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human ...

The a-pacu-lypse is upon us. As if US waterways weren’t teeming with enough invasive fish of late, a Texas angler caught a South American piranha relative with “human teeth” at a local lake on Sunday.

How did two sets become standard for human beings?