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More than 60 dead gray whales have washed up on Pacific coasts this year, the most in two decades. Researchers are trying to determine whether their food source is a problem, or climate change.

A study reveals that certain West Coast orcas belong to distinct social groups with different habits and diets. NPR's Scott Simon speaks with ecologist Josh McInnes about how the groups differ.

While the collapsed Key Bridge is removed, NPR's Michel Martin talks to Bethann Rooney, port director for the Port Authority of New York and New Jersey, aboutaccommodating increased shipping traffic.

An undersea volcano erupted near the Pacific nation of Tonga, sending tsunami waves crashing across the shore there and around the Pacific, including a surges along the U.S. West Coast.

A section of an iconic California highway has reopened after three years. NPR's Ailsa Chang talks with Rhea Withrow, who lives in a town that was isolated during the closure

The U.S. territory is home to more than 170,000 residents in the western Pacific Ocean. Guam was walloped by a power typhoon in late May and the recovery is slow going as power and water are restored.

Nearly a week into a new and widening war in the Middle East, some of the U.S.'s closest allies in the region and beyond are trying to contain it.

Some unusual meteorites suggest that Earth got its water at its start, rather than forming dry and being watered by comets later on.

Known as the mother of Colombian corals, at 70, marine biologist Elvira Alvarado is still diving — and pioneering "coral IVF" to help save endangered reefs.

The remnants of a typhoon have forced over a thousand people to evacuate from rural villages in Western Alaska. Many of those leaving are Alaska Native people with generations-long connections to the land.