The blue hour - when the sun is some distance below the horizon, when the sky is deep blue and the landscape is suffused with bluish light - is a good time to take photos.
It's highly unlikely a supervolcano will erupt at Yellowstone National Park. But, says a new study, if one did, volcanic ash would cover North America.
Strong earthquake struck San Francisco Bay area early on August 24, 2014. Power outages, moderate damage across region, closed highways, serious injuries, no deaths.
It's been a banner year for iceberg sighting in Iceberg Alley, the area off northeastern Newfoundland where the Titanic struck an iceberg and went down in April, 1912.