Science & Technology | The Ocean & The Environment

Discovery of 'hidden world' under Antarctic ice has scientists 'jumping for joy'

Researchers in Antarctica have discovered a hidden ecosystem more than 1,600 feet below the ice, filled with shrimp-like creatures.

Pets & Animals | Other Kinds Of Animals

Yellowstone's wolves are back, but they haven't restored the park's ecosystem. Here's why.

Nearly 25 years after wolves were reintroduced, the predators have helped parts of the park bounce back but haven't completely restored Yellowstone.