"On the Hopi reservation in the high desert of northern Arizona, construction is underway.

A dilapidated auto garage is being converted into a fully-equipped kitchen, food storage areas, dinin…

"The global population is likely to peak earlier than expected and at a lower level, according to new UN projections that officials have said offer hope of reduced pressure on the environment.

The&…

"The global population is likely to peak earlier than expected and at a lower level, according to new UN projections that officials have said offer hope of reduced pressure on the environment.

The&…

"For a hot minute, it looked like the Doomers might be proved wrong.

In recent years, the rapid deployment of renewable energy and a shift away from the dirtiest fossil fuels have given even griz…

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SARATOGA, Calif. — A silver Winnebago pulled up to a self storage warehouse on the outskirts of a Silicon Valley suburb and three re…

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In a guarded compound at the foot of the Rockies, government scientists are working on a new kind of global alarm system: One that can detect if another country, or maybe just an adventurou…

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"What the U.N. negotiations, known as COP, can (and can’t) do to combat climate change.

When this year’s United Nations climate summit in Baku, Azerbaijan, end…