Opinion | What’s Better, a Prize or a Patent?

Elon Musk has put up $100 million in prize money for a way to extract carbon from the atmosphere.

In Climate Coverage, Reporting the Grim Facts, but Also the Fight

A Times journalist distills the recent U.N. report and talks about how he treats a beat that can get more than a little gloomy.

Why Sitting May Be Bad for Your Brain (Published 2018)

Taking a walk every 30 minutes can restore blood flow to the brain when you’re sitting for hours.

Compact Sensor Keeps You Safe By Watching CO2 Levels

Remember when work meetings were just a bunch of people filling up a small, poorly ventilated room with their exhaled breath? Back in the good old days, all you had to worry about was being lulled …

Amid Extreme Weather, a Shift Among Republicans on Climate Change

Many Republicans in Congress no longer deny that Earth is heating because of fossil fuel emissions. But they say abandoning oil, gas and coal will harm the economy.

Climate Change Is a ‘Hammer Hitting Us on the Head,’ Developing Nations Say

Leaders of vulnerable countries, as well as activists, said Monday’s blistering United Nations report must galvanize global action. But major emitters are dragging their heels.

A Hotter Future Is Certain, Climate Panel Warns. But How Hot Is Up to Us.

Some devastating impacts of global warming are now unavoidable, a major new scientific report finds. But there is still a short window to stop things from getting even worse.

Democrats Seek $500 Billion in Climate Damages From Big Polluting Companies

Under a draft plan Democrats are circulating, the Treasury Department would tax a handful of the biggest emitters of planet-warming pollution to pay for climate change.

Democrats Propose a Border Tax Based on Countries’ Greenhouse Gas Emissions

Senators introduced a plan on Monday to tax iron, steel and other imports from countries without ambitious climate laws.

Europe Is Proposing a Border Carbon Tax. What Is It and How Will It Work?

Supporters say it could pressure other countries to take stronger climate action. But this novel tool could be tricky to implement.

Europe Plans Aggressive New Laws to Phase Out Fossil Fuels

The proposals, expected Wednesday, are likely to be more ambitious and specific than other countries’ efforts to fight climate change and may include a border tax on imports deemed to be polluting.

Parts of the Amazon Go From Absorbing Carbon Dioxide to Emitting It

A new study analyzing hundreds of aerial readings of emissions above the forest canopy found that forest regions in the southeast were most affected.

Are ‘Heat Pumps’ the Answer to Heat Waves? Some Cities Think So.

Electric heat pumps are a way to cool and heat homes at a much lower carbon cost than traditional air-conditioners and furnaces.

Has the Carbontech Revolution Begun?

Science can now pull carbon out of the air. For that to make a difference, though, businesses need to find profitable places to put it.

Some Republicans Find Failure to Grapple With Climate Change a ‘Political Liability’

A small but growing number of Republicans say the G.O.P. needs a coherent climate strategy and formed a “Conservative Climate Caucus” on Capitol Hill.

Carbon Dioxide in Atmosphere Hits Record High Despite Pandemic Dip

Global emissions dropped last year, but the decline wasn’t nearly enough to halt the buildup of greenhouse gases in the atmosphere.

Here Are America’s Top Methane Emitters. Some Will Surprise You.

Oil and gas giants are selling off their most-polluting operations to small private companies. Most manage to escape public scrutiny.

A Big Climate Problem With Few Easy Solutions: Planes

The airline industry might not be able to reduce greenhouse gas emissions for decades because most solutions are not yet viable.

Activists Crashed Exxon’s Board, but Forcing Change Will Be Hard

The tension between climate goals and lifting Exxon Mobil’s profits could make it difficult for activists to make progress.

It’s Crunch Time and Biden’s Climate Gambit Faces Steep Hurdles

He wants to require power companies to replace fossil fuels with clean energy. It’s a broadly popular idea but its path in Congress is perilous.