First-week orders could undermine progress on clean energy investments, pollute the air and add few benefits to the economy, especially in Arizona.

The Trump administration is also ending federal requirements that push car makers to produce more low-emission models.Start the day smarter. Get all the news you need in your inbox each morning.

Northern Arizona is famous for its aspen trees, and a multi-decade study looks into how they’re being affected by climate change. Among the findings: There are a good number of smaller, younger aspens and a good number of older ones,

The orders could affect Arizona through their impact on climate change and potential harm to the electric vehicle industry. There are no significant proven oil or gas reserves in Arizona ...

Rep. Lisa Fink said she understands geoengineering can be controversial and some people attach it to the “chemtrails” conspiracy theory.

The study highlights the urgent need to safeguard global tropical wetlands from human impact. Complex organisms, thousands of times smaller than a grain of sand, play a critical role in shaping massive ecosystems and influencing Earth's climate,

Experts say Trump's moves to step away from global climate action, ramp up domestic oil and gas production and remove incentives for electric vehicles are worrisome. The planet continues to heat up; 2024 was Earth's hottest year on record,

Climate scientist Ben Hamlington works on understanding the impacts of climate change. Losing his house in the Eaton Fire has given that work new meaning.

Experts say Trump’s moves to step away from global climate action, ramp up domestic oil and gas production and remove incentives for electric vehicles are worrisome as the planet continues to heat up. 2024 was Earth’s hottest year on record, and climate scientists say the rising heat is contributing to extreme weather affecting millions.

Artist Charles Gaines doesn't want to tell you what to think; he wants his work to inspire viewers to think for themselves.

The Republican-controlled Senate has confirmed Lee Zeldin as administrator of the Environmental Protection Agency.

The Old Farmer's Almanac, which has been in business since 1792, recently released its spring weather forecast. The outlook? "Warmer-than-normal temperatures for most of the country, with a few exceptions: southern and central California, Desert Southwest, southern Florida, and western Ohio Valley, where it will be near to below normal."