As New York and other states tally the damage, a leaked document suggests more Energy Department cuts may be coming.

© Ariana Gomez for The New York Times

The world generated more electricity from renewable energy than coal for the first time ever, a new report finds. The United States is lagging behind.

They feast on bubbles of methane seeping out of the ocean floor. Could their appetites be harnessed to slow climate change?

The lawsuit accused the Environmental Protection Agency of illegally revoking the money without congressional approval.

© Bridget Bennett for The New York Times

The burning of coal is the largest contributor to climate change worldwide. But the Trump administration sees United States coal as crucial.

The burning of coal is the largest contributor to climate change worldwide. But the Trump administration sees United States coal as crucial.

Beijing’s climate and trade pledges at the U.N. highlighted how modest moves can stand out when the United States is pulling back from global leadership.

This town’s minerals make A.I. possible. Then came Hurricane Helene. Kate Crawford is a professor at the University of Southern California, a senior principal researcher at Microsoft Research and the author of “Atlas of A.I.”

Spruce Pine, N.C., supplies the world’s highest-purity quartz, a mineral that keeps the A.I. revolution afloat. What are the consequences?

This town’s minerals make A.I. possible. Then came Hurricane Helene.

While the West is distracted and divided, China is focused and surging ahead.

While the West is distracted and divided, China is focused and surging ahead.

At the Climate Forward live event, we spoke to top policymakers about China, the Trump effect on climate policy and the boom in artificial intelligence.

On Wednesday in New York, countries lined up to say they would accelerate their efforts to cut greenhouse-gas emissions. In staying away, the U.S. was all but alone.

President Xi Jinping told a U.N. climate summit that China will reduce emissions across its economy, expand renewables sixfold and make electric cars “mainstream.”

China had fueled climate optimism. But now the story seems to be changing.

China had fueled climate optimism. But now the story seems to be changing.

To transform our relationship with our planet, we need to value nature as profoundly sacred.

A small, carefully scaled geoengineering program could compensate for the loss of cooling as we eliminate sulfur pollution.

Laos is just one of the emerging markets where China’s green-tech revolution is installing more than cheap energy.

Pacific island nations have seen American pledges and attention come and go with geopolitical winds. Recent U.S. pullbacks are met with disappointment but not surprise.

Its vast investment in solar, wind and batteries is on track to end an era of global growth in the use of coal, oil and gas, the researchers said.

Across the country, unmasked wildfire fighters are falling ill and dying. Hannah Dreier talks about her investigation into the risks these workers face.

Chinese automakers have rolled out chargers that can mostly recharge a car’s battery in about five minutes. Yet U.S. technology lags far behind.

Chikungunya, which can disable victims for years, is spreading rapidly, including in China, France and other places that have not seen major outbreaks before.

A surge in high quality research and patent applications has cemented China’s dominance in the industry.

The recent flooding that killed 31 in a single nursing home exposed flaws in emergency planning as China braces for more extreme and unpredictable weather.