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Conditions in the tropical ocean affect weather patterns worldwide. The most well-known examples are El Niño or La Niña events, but scientists believe other key elements of the tropical climate remain undiscovered.

While scientists have grown more confident about projections of sea level rise for the next few decades, many competing factors make it hard to see far into the coastal future.

Increased acidity in the atmosphere is disrupting the ecological balance of the oceans, according to new research led by the University of East Anglia (UEA).

The science instrument mapped the dome of high pressure that settled over the northwestern U.S. and western Canada in late June, sending temperatures into the triple digits.

Melting sea ice is spurring a shipping boom in the Northwest Passage, raising the specter of oil spills in the Arctic.