With a population of 1.4 million people, San Diego is a bona fide big city with eclectic museums, historic art centers, and ...

A common neurotoxin produced by algae blooms is making California sea lions more aggressive. Here’s why it has the power to change behavior—and the danger it poses. Rescuers capture a sick sea ...

EXCLUSIVE: The Walt Disney Company revealed its Earth Month programming plans with a campaign led by National Geographic to ...