U.S. climate envoy John Kerry urged the world to be “very skeptical” about claims from oil and gas producers that emerging technology soon will allow people to adequately capture the climate-wrecking fumes emitted by their cars, planes and businesses.

The United States and European allies said on Friday, February 25, 2022, they were stepping up sanctions over Russia’s invasion of Ukraine by adding measures directly targeting President Vladimir Putin and his foreign minister, putting diplomatic appeals to one side as Russia’s forces closed on Ukraine’s capital.

The Democratic congressional delegation that House Speaker Nancy Pelosi has led to the U.N. climate talks in Glasgow, Scotland, carries the Biden administration's message: America is back on the global climate stage.

Barack Obama expressed confidence at U.N. climate talks Monday that the Biden administration will ultimately get its $555 billion climate package through Congress, and faulted U.S. rivals China and Russia for what he called a “dangerous lack of urgency” in cutting their own climate-wrecking emissions.

Toward the end of the U.N. climate summit's first of two weeks, Kerry’s voice grew hoarse from his mission of rallying global climate efforts that are threatening to hit a wall at home.

Eric Garcetti's office announced a positive test result in a tweet, adding only: “He is feeling good and isolating in his hotel room. He is fully vaccinated.”

President Joe Biden is joining other world leaders in highlighting the importance of preserving forests as a force against global warming, but at home a coal-state U.S. senator is again threatening Biden's landmark climate legislation at home.

President Joe Biden heads to a vital U.N. climate summit at a time when a majority of Americans regard the deteriorating climate as a problem of high importance to them, an increase from just a few years ago.

President Donald Trump is poised to roll back ambitious Obama-era vehicle mileage standards and raise the ceiling on damaging fossil fuel emissions for years to come, gutting one of the United States' biggest efforts against climate change.

The U.S. Environmental Protection Agency is pursuing rule changes that experts say would weaken the way radiation exposure is regulated, turning to scientific outliers who argue that a bit of radiation damage is actually good for you — like a little bit of sunlight.