A natural experiment in a national park in Patagonia shows how the return of a large predator can reshape an ecosystem.

Penguins, it seems, can't really taste their dinners. They aren't able to pick up on sweetness, bitterness, or a meaty flavor known as umami, a study finds. Instead, they can only taste sourness and ...

Trade ’em! Eat a few million dollars, get a better return. Done. Easy peasy, right? The Pittsburgh Penguins’ situation is easy for all of us on the outside who are not involved, but it is far more ...