For years, orcas off the coasts of Spain and Portugal have been ramming boats, tearing off rudders, and even sinking vessels.

A remarkable deep-sea expedition uncovered an unexpected underwater archive that could transform scientists' understanding of ...

The Mariana Trench is so deep that sunlight never reaches its bottom, and the pressure can crush ordinary machines. Despite ...

Historian Peter Novick compared historical objectivity to nailing jelly to a wall-impossible, since it isn't one clean idea ...