Officials in jurisdictions led by Democrats have viewed the denials of aid as politically driven.

The plan to reopen Three Mile Island to supply Microsoft with power wins a federal loan guarantee, shifting some of the risk onto taxpayers.

The EPA proposed curtailing broader definitions of wetlands embraced by the Obama and Biden administrations, removing protections under the Clean Water Act.

An emerging area of research is uncovering hidden links between nature and human health.

Explore the ways animals and plants protect human health and what’s at stake when species are endangered.

Newly recognized patches of undeveloped grassland are accidental time travelers from a distant past, and they offer answers for our 21st century problems.

Emission-rate increases will accelerate in the U.S. and E.U. but will slow in China and India, according to a report published Wednesday.

A Washington Post investigation shows why one region of the United States is increasingly vulnerable to extreme rainfall and floods.