Unseen mountains, valleys, lakes, and rivers lie under Antarctica’s mile-thick ice sheet. Changes to those hidden rivers could have dramatic global consequences. As Totten Glacier oozes off the ...

Researchers in Antarctica were in the right place at the right time when an iceberg suddenly broke off, revealing a shocking discovery.

Off Antarctica, the biggest mystery isn’t centered on any particular creature but on the entire ecosystem: How exactly does that much life thrive under so much ice? In other parts of the ocean ...