As Nepal’s mountains warm, mosquitoes are spreading dengue, once strictly a lowland disease, to higher-elevation, ...

Scientists working on new reports for the IPCC, the U.N.’s climate science panel, warn about a funding crunch and report ...

Incoming chair Rep. Jared Huffman outlines his hopes on action for public lands protection, clean air and water, ...

China, the source of more than half the world’s sulfur hexafluoride emissions, will be key to the pledge’s success.

The massive, still-unfinished Deep Tunnel project was supposed to be the answer. But wastewater dumped in the river now ...