Sinking seaweed.

An ambitious strategy aims to cool the planet by dumping farmed seaweed on the sea floor. Will it work?

Controversial ocean alkalinity study seeks EPA permit.

Project would test fighting global warming by artificially boosting seawater's absorption of carbon dioxide.

Can pollution-heavy steel manufacturing go green?

Department of Energy funds research to take carbon out of iron and steel production.

Alvin, the iconic submersible, plunges deeper than ever.

After $50 million upgrade, U.S. research sub can reach 99% of the ocean floor.

Kill wolves to save caribou? Sadly, it seems to work.

Some worry the findings will stall efforts to halt logging-the root cause of caribou population declines.

A thousand years of solitude.

How did the first human settlers of the Canary Islands survive a millennium of isolation?

Florida coral restoration in hot water.

After unprecedented heat wave killed transplanted coral, reef experts are charting a new strategy.

An alkaline solution.

As alarm about climate change grows, scientists explore a strategy for drawing excess carbon dioxide into the ocean.

After the flood.

As the world's largest dam removal takes shape, restoration ecologists are poised to transform a landscape.

As oceans warm, scientists forecast heat waves.

Sea temperature predictions could inform fisheries management and conservation.

Frozen in time.

Scientists are learning how to cryopreserve living tissues, organs, and even whole organisms, then bring them back to life.

Russia tensions keep Arctic research on ice.

Collaboration stifled as many scientists look to establish fieldwork elsewhere.

U.S. opens new high-security livestock laboratory.

Unease greets Kansas facility that will work with dangerous agricultural pathogens.

Schizophrenia pinpointed as a key factor in heat deaths.

The mental illness tripled the risk of death during a searing 2021 heat wave, researchers find.

Breathless oceans.

Warming oceans are running short of oxygen, and the fiercest marine predators are already feeling the effects.

Iron stress threatens Southern Ocean phytoplankton.

Lack of the nutrient limits the plants' productivity, key to climate and ecosystems.

Shelter from the storm.

A plan to wall off Houston and nearby industry from flooding caused by hurricanes will cost tens of billions of dollars. Will it be enough?

Fiery invasions.

Around the world, flammable invasive grasses are increasing the risks of damaging wildfires.

Catching fire.

Past efforts to coax geothermal energy from hot, dry rock deep underground have faltered. But new techniques could crack the problem.