How Republicans undid so many of his accomplishments in a single year

By loosening environmental regulations, Trump risks making a serious public-health hazard critical.

He keeps picking deniers for top government positions: NASA might soon be run by a GOP congressman who blames global warming on the sun.

Pete Lopez is a Trump political appointee, and he's responsible for Puerto Rico’s environmental cleanup. But he's actually qualified for the job.

Air pollution, chemical and gas spills, dirty floodwater: Harvey is posing a unique threat to public health and an incredible challenge for the regional EPA.

The powerful storm is headed straight toward the heart of the American petrochemical industry, while a key EPA response position remains unfilled.

Legal attacks, internet harassment, and a Trump-fueled "culture of fear" are making their work more difficult than ever.

When it comes to the environment, Richard Nixon was no Donald Trump.

There is a desperate belief that we’re just one more disclosure away from bringing down the president.

Donald Trump can’t erase Barack Obama's signature climate achievement with the stroke of a pen.

The greenhouse gas hasn't gotten the attention such a potent carbon-polluter deserves. But that's about to change.

The Aliso Canyon gas leak shows that environmental disasters are happening across the country.