Scientists have found a clever new way of measuring ocean warming, using sound waves from undersea earthquakes. The researchers say the "hack" works because sound travels faster in warmer water.

and his colleagues point out that sound waves can travel thousands of miles through the ocean. "Sound is a fundamental cue for feeding, navigation, communication and social interaction in the ...

Duck' sounds from the ocean, linked to Antarctic minke whales, puzzle scientists with rhythmic calls. A mystery of ...