Scientists have improved our ability to interpret one of the most common measures of the temperature of Earth's oceans in the distant past.

PNNL is studying the movement of lamprey fish, which are culturally and historically important to the Pacific Northwest, on rivers and through hydroelectric dams.

Super typhoons grow more intense when their fresh rains reduce the ocean below's salinity.

Oil spills could be cleaned up in the icy, rough waters of the Arctic with a chemically modified sawdust material that absorbs up to five times its weight in oil and stays afloat for at least four months.