Scientists have discovered a strong, unexpected link between Earth's magnetic field and oxygen levels.
Colorado River Basin Groundwater Won't Run Out, But We Won't Be Able to Get to It Eventually, Scientists Warn
Nearly half of California's faults, including the San Andreas, have long been known to cause earthquakes.
Russian scientists have discovered a new island in the Caspian Sea, the world's largest inland body of water.
Record piles of sargassum seaweed have washed up on Caribbean beaches, and their numbers continue to grow