Extensive triple digit heat hit Philadelphia as the heat dome crushing the Eastern half of the nation sizzled to what should be its worst Tuesday. (AP Video: Tassanee Vejpongsa) ...

Baby hippos are some of the cutest semiaquatic mammals on Earth. Learn five awesome baby hippo facts and see five adorable pictures.

Cameron Park Zoo in Waco is introducing a new star to its animal family — Mosi, a 4-year-old Southern white rhinoceros who arrived from Virginia Zoological Park in May.