There are spoilers ahead. You might want to solve today's puzzle before reading further! TriathlonCo

This story is the fifth in a series.CENTER CITY, Minnesota—It sounded absurd, the idea of spending a

By training 192 lasers onto a capsule the size of a peppercorn, U.S. government scientists last week

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Israel on Monday began allowing thousands of Palestinians to return to the heavily destroyed north o

SHARM EL-SHEIKH, Egypt—The COP27 climate conference in Egypt may be remembered as the moment when th

The United States is poised to make much deeper cuts to the pollution that's fueling global warming

MACUELIZO, SANTA BARBARA, Honduras – For years, Suyapa Jaqueline Trejo watched her community dwindle

NEW YORK – This was not a pretty sight for Yankees Universe.On the other side of town, Juan Soto bea

California utility regulators on Thursday unanimously approved long-anticipated changes to how the s

Carbon emissions from the power sector in a 10-county region of southwestern Pennsylvania would be a

Twitter's iconic blue bird logo was officially replaced Monday with the letter "X." A day earlier, t

People are shelling out more to travel the holiday road this season.About a third of Americans are p

At the height of wildfire season in the American West last summer, as smoke from California drifted

You can forgive people who work on U.S. energy policy for being tired this month. They have just spr