News of the breakup of a leading science institution rippled through an annual gathering of Earth, ocean and space scientists. Many say American science is suffering under the Trump administration.

© Mark Makela/Reuters

A global effort to better understand moisture-laden rivers in the sky, like those currently battering the West Coast, will take flight in January.

© Erin Schaff/The New York Times

A yearly checkup on the region documents a warmer, rainier Arctic and 200 Alaskan rivers “rusting” as melting tundra leaches minerals from the soil into waterways.

© Josh Koch/U.S. Geological Survey

American officials joined Russia, Saudi Arabia and Iran in objecting to language on fossils fuels, biodiversity and plastics in a report that was three years in the making.

© Monicah Mwangi/Reuters

Blooms of yellowish-brown seaweed along the Equator are breaking records and defiling beaches, while a centuries-old patch farther north is disappearing.

© Paola Chiomante/Reuters