Red tide is caused by a harmful algae bloom. It can bring respiratory problems and even fish kills in high concentrations.

A series of small earthquakes shook the San Francisco Bay Area on Thursday, according to the United States Geological Survey.

California is riddled with a number of fault lines that frequently cause earthquakes, including Arrowhead, Waterman Canyon, ...

Google Maps now shows Gulf of America instead of Gulf of Mexico for U.S. residents as Department of Interior officially ...