Scientists are working to pinpoint the source of a giant mass of methane hanging over the southwestern U.S., which a study found to be the country's largest concentration of the greenhouse gas.
Researchers from several institutions are in the Four Corners region of the U.S. Southwest with a suite of airborne and ground-based instruments, aiming to uncover reasons for a mysterious methane "hot spot" detected from ...
U.S. scientists on Tuesday completed a nearly two-week mission to explore waters around the U.S. Virgin Islands as part of a 12-year project to map the Caribbean seafloor and help protect its reefs.
Can old data provide new insights about lightning and the physics of severe weather?
Five hundred feet beneath the ocean's surface, a robotic submarine is bumping into a grove of bone-white coral in the waters off the Channel Islands.
As man-made threats to coral reefs mount, and interest in conserving reef ecosystems grows, scientists have turned to studying extremely remote and uninhabited reefs in an effort to understand what coral reefs would be like ...
U.S. scientists are launching an expedition to study the underwater habitat around the U.S. Virgin Islands as part of a 12-year effort to map and help conserve Caribbean coral reefs.
The slow start to the nation's tornado season came to a violent end Wednesday, when tornadoes raked Tulsa during its evening rush hour, killing one person and injuring others.
With only about two-dozen twisters recorded so far this year during a period when 100 or more are typical, the U.S. appears to be in a tornado drought as cool, stable air prevents the ingredients of the violent storms from ...
The nation's wild Jekyll-Hyde winter will likely dictate what weather worries Americans have this spring.