How ‘the big one’ near Seattle could trigger an earthquake in San Francisco

One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on ...

This sea monster sank ships off Constantinople for 50 years—was it an orca?

The historian Procopius described how a creature called Porphyrios terrified sixth-century sailors for 50 years. But what was ...