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Climate Change

Stashing CO₂ in the sea

Keeping global warming to manageable levels will require removing carbon dioxide from the atmosphere and storing it somewhere else. The world’s oceans may be a promising option.

Mining the deep ocean

Renewable technologies need a multitude of critical minerals. The seabed could supply these riches. But at what cost?

The strange animals that control their body heat

Some creatures can dramatically alter their internal temperature — a strategy called heterothermy — and outlast storms, floods and predators

The cataclysmic flood that wasn’t

Researchers have long believed that a sudden, massive deluge filled a dry, salt-filled Mediterranean some 5 million years ago. Turns out that probably didn't happen, but there was still drama aplenty.

Beating back the Aedes aegypti mosquito

Scientists are taking a multipronged approach to tackle this dangerous carrier of dengue, yellow fever and other noxious viruses

Top science stories of 2025

In a year of funding chaos, ongoing climate change and pollution perils, we also saw the most powerful telescope yet, personalized gene therapy, and the next-best-thing to an HIV vaccine — not to mention a brand-new color

When clouds flock together

Scientists are discovering that clumping clouds supercharge storms in surprising ways — driving heavy, deadly rainfall and flooding

Can tinkering with plant pores protect crops against drought?

It’s not an open-and-shut case. But researchers are finding out plenty by genetically altering the numbers of these openings, as well as simulating future atmospheres, and more.

Will your next EV have a solid-state battery — and improved performance?

Superionic materials have spawned hope for a new generation of power packs for electric cars, with a promise of greater range, faster charges and more safety. But scaling up won’t be easy.

Civilizations of Africa through a new lens

Small settlements and the scourge of slavery left gaps in Africa’s archaeological record. Yet sites and artifacts are revealing clues to the continent’s more recent history. An archaeologist explains the findings and threats to this heritage.

The history of the ocean, as told by tiny beautiful fossils

Bountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.

How farmers can help rescue water-loving birds

Cranes, sandpipers, ducks, geese and many other waterbirds have lost essential rest stops along their seasonal migration routes. Bird-friendly agriculture can assist in filling the gaps.

How climate change threatens eye health

Cataracts, pink eye and other ocular disorders are linked to heat, air pollution and higher UV exposure

Ghost forests are growing as sea levels rise

As trees choked by saltwater die along low-lying coasts, marshes may move in — for better or worse, scientists are learning

Shared mobility: Making travel easier for all

Carshares, bikeshares and the like are a positive for the environment, though access to them isn’t equal. What can be done to give everyone more transportation options?

For climate and livelihoods, Africa bets big on solar mini-grids

Nigeria is pioneering the development of small, off-grid solar panel installations to bring reliable electricity to remote communities — setting a model for other African countries

Why sizzling cities are mapping hot spots street by street

In metros like Reno, Nevada, citizen scientists hit the road to collect detailed temperature data — key to taming urban heat, saving lives and designing for a warmer future

The teeming life of dead trees

Rotting logs turn out to be vital to forest biodiversity and recycling organic matter

Solving renewable energy’s sticky storage problem

When the Sun doesn’t shine and the wind doesn’t blow, humanity still needs power. Researchers are designing new technologies, from reinvented batteries to compressed air and spinning wheels, to keep energy in reserve for the lean times.

The great green building makeover

Getting our homes and workplaces to be energy efficient has major benefits — but not when it is done one window at a time. Here’s why deep retrofits and biomaterials are key to more sustainable living.

Can desalination quench agriculture’s thirst?

Miles away from the ocean, projects are afoot to clean up salty groundwater and use it to grow crops. Some say it’s a costly pipe dream, others say it’s part of the future.

The secrets of butterfly migration, written in pollen

Trillions of insects move around the globe each year. Scientists are working on new ways to map those long-distance journeys.

Sustainable building effort reaches new heights with wooden skyscrapers

Wood engineered for strength and safety offers architects an alternative to carbon-intensive steel and concrete

The dirt on biocrusts: Why scientists are working to save Earth’s living skin

Think twice before stepping on that crunchy top layer of soil. It may be a vital ecosystem — one that you can help protect.

To help with climate change, carbon capture will have to evolve

The technologies are a useful tool to reduce CO2 levels but have yet to move us away from fossil fuels

The greening of planes, trains and automobiles

We need new fuels to transport people and goods around the globe as society moves away from coal, natural gas and oil. Here’s how things are shaping up.

Cleaning up cow burps to combat global warming

New tools for lowering methane emissions from livestock are on their way

The hornet has landed: Scientists combat new honeybee killer in US

An invasive yellow-legged wasp has been decimating beehives in Europe — and bedeviling Georgia since last summer. Researchers are working nest by nest to limit the threat while developing better eradication methods.

Geothermal power heats up

Long confined to regions with volcanic activity, geothermal promises to become a much more versatile energy source thanks to new technologies

Why are there so many beetle species?

Diet played a key role in the evolution of the vast beetle family tree

Nuclear’s role in a net-zero world

Is nuclear power a necessary part of the energy transition away from fossil fuels? As the debate rages on, new technologies and smaller reactors may be shifting the balance.

How to overcome political polarization on climate change

Conversations — in real life — can help bridge the partisan divide, but the trick is to have some structure to the discussion, says a human ecologist

Hunting sky islands for genetic clues to climate resilience

OPINION: Isolated mountaintops are hotbeds of evolutionary adaptation and great places to study how climate change affects ecosystems

Moving trees north to save the forests

As the world warms, trees in forests such as those in Minnesota will no longer be adapted to their local climates. That’s where assisted migration comes in.

A big boost to Europe’s climate change goals

The bloc aims to become the first carbon-neutral continent. A new policy called CBAM will assist its ambitions — and may persuade other countries to follow in its footsteps.

Losing the connection between the Andes and the Amazon: A price of peace in Colombia

The South American country, where the biodiversity of the Andes meets that of the Amazon, is losing the great natural wealth of some 1,500 square kilometers of forest each year, mainly in areas formerly under guerrilla control

The hidden threat from rising coastal groundwater

OPINION: Sea level rise won’t hit just homes on shorefronts, but also the infrastructure beneath our feet

Indigenous languages are founts of environmental knowledge

Peoples who live close to nature have a rich lore of plants, animals and landscapes embedded in their mother tongues — which may hold vital clues to protecting biodiversity

Forests are under attack from invasive species

OPINION: International commerce and travel bring ecological destruction to the world’s most cherished natural places. We need to do more to stop the assault.

Green shipping picks up speed

An international treaty aims to bring the shipping industry to net-zero emissions by around 2050. Can novel fuels, wind power and coordination on a global scale get it there?

The race to understand polar ice sheets

As glacial cliffs break off and destabilize frozen landscapes, glaciologist Richard Alley focuses on the fractures. The work could improve predictions about future sea-level rise.

How wind turbines could coexist peacefully with bats and birds

As wind power grows around the world, so does the threat the turbines pose to wildlife. From simple fixes to high-tech solutions, new approaches can help.

Pursuing fusion power

Scientists have been chasing the dream of harnessing the reactions that power the Sun since the dawn of the atomic era. Interest, and investment, in the carbon-free energy source is heating up.

As the climate changes, plants must shift their ranges. But can they?

Lots of them depend on fruit-eating birds and mammals to spread their seeds. But it’s debatable whether the animals — many in trouble themselves — can disperse seeds far and fast enough to keep pace with a warming world.

The quest to understand tornadoes

Scientists are still grappling with how and why violent twisters form. Will new technology and computing power help?

Leaning into Indigenous knowledge on climate change

Native peoples attuned to the natural world have long collected detailed environmental information. Now scientists are cataloging these observations and learning how they’re affecting Indigenous communities globally.

Does it work to pay people not to cut the forest?

Evidence that the approach helps to save trees, preserve ecosystems and reduce carbon emissions is often hard to come by. But it can succeed if it’s done right, says an economist.

How climate change could make fungal diseases worse

Disease-causing fungi are likely to thrive in a warmer, stormier world — and more of them might be poised to make the leap to infecting people

Dead trees around the world are shocking scientists

Forests once deemed resilient are suffering surprising die-offs. To predict the fate of the world’s woods in the face of climate change, researchers need to understand how trees die.

Abandon the idea of ‘great green walls’

OPINION: The notion of planting miles of trees to hold back encroaching deserts is misguided and damaging; we should promote programs that secure livelihoods and respect dryland ecologies instead

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