Arthropods, with harder bodies and better cognition than some other candidates, seem to be the most likely culprit.

When corals get too hot, the algae that feed them can disappear, leaving them bleached. Blocking the Sun could help.

Warming surface waters and increased stratification result in uneven loss of dissolved oxygen across the Pacific basin that shifts water mass age.

Science news by AGU. Keep up to date on the latest climate and science reporting by journalists, as well as exciting discoveries and insightful opinions from researchers and other scientist authors.

AGU Publications is committed to supporting the UN Sustainable Development Goals through publishing and drawing attention to scientific research that addresses issues of global and societal concern.

Low-frequency infragravity waves shape shorelines, but exactly how they contribute is mysterious. A technique from Bayesian probability theory might change that.

New evidence from the depths of the Red Sea supports the oxidation of manganese and iron as an engine for life in the earliest oceans.

Phytoplankton bloom development and senescence were observed using a pheophytin proportion (PheoP) index in the Pacific Arctic region Low PheoP indicating fresh phytoplankton growth was observed ...

Gov. Newsom has declared a statewide emergency for California in anticipation of this winter's El Niño-fueled storms

133 datasets nominated by the Earth and space science community.

American Geophysical Union announces the new living collection “Impactful Datasets in Earth, Space, and Environmental Sciences” Nominators submit datasets impactful to their work along with perso...

AGU editors recognize the contributions of peer reviewers in 2025, whose expertise and dedication were integral to the advancement of the Earth and space sciences.

The critical and highly anticipated yearly assessment will be carried forward through a partnership with CIRES/CU Boulder and the University of Alaska Fairbanks.

Dissolved inorganic carbon (DIC) correlates with salinity in Kongsfjorden, reflecting the influence of freshwater inputs Δ14C and δ13C measurements of DIC show weak vertical gradients in Kongsfjo...

The EPA is proposing a change to the definition of “discharge of a pollutant” that would exempt moving boats and ships from pollution regulations.

The twice-daily ebb and flow of the sea have the power to change the planet. Weak tides could have allowed Earth to freeze over, and strong tides may have given vertebrates a leg up on land.

Scientists come in all shapes and sizes. Sometimes, that shape is a blubbery 1,000-kilogram whale with a 2-meter tusk.

The Arctic Report Card, an annual, peer-reviewed evaluation of the state of our warming Arctic, will still be published this year despite a lack of financial or logistical support from NOAA.  On 10 Au...

A new study shows melting glaciers are remobilizing pollutants.

This toolkit describes how to start a simple, cost-efficient community-based monitoring program in British Columbia, Canada. It is written for anyone who is interested in keeping tabs on the status of…

Ocean stratified mixing hotspots sustained by shear below marginal instability follow an energy cascade not controlled by overturning At high Reynolds number, observations and modeling show that ...

Physical oceanographers might have a misconception about the anatomy of mixing at realistic Reynolds numbers in this important type of shear instability.

The Trump administration is pulling funding from NOAA’s Arctic Report Card, an annual, peer-reviewed report about the state of the region, which is warming more quickly than anywhere else on Earth.

Water mass framework reveals consistencies in oxygen projections within water masses and uncertainties in their spatial redistribution Models which best match observations yield more precise proj...