AMSTERDAM -- The European Union needs to double its efforts to boost energy efficiency in order to cut greenhouse gases, partly by producing better household...

WASHINGTON -- The gaps and stringy fibers in these space rocks sure look like bacteria, and a NASA researcher has caused a stir with claims...

Colorado's coal industry is on fire lately, going after natural gas producers with gusto in the wake of last year's controversial Clean Air, Clean Jobs...

BLYTHE, Calif. — Native Americans are clashing with the federal government over plans to fast-track approval and construction of massive solar energy projects that the...