Joshua Partlow, The Washington Post

Phoenix is in the middle of a record-breaking heat wave of feverish days and suffocating nights. Even tiny mistakes can have grave consequences.

California, Arizona and Nevada agreed to conserve 13 percent of their Colorado River allocation to prevent Lake Powell and Lake Mead from falling to critical levels.

A once-unfathomable scenario - Lake Powell dropping to historic lows and shutting down power generators that serve millions - could start as soon as July.

In a row of small conservative towns, the flames are unlike anything they’ve seen before. Instead of concerns over global warming, though, there is blame directed at environmentalists, marijuana farmers, and potential looters.

The Vineyard Wind project entails 62 turbines and 800 megawatts, enough to power 400,000 homes.

Interior Secretary Deb Haaland visited the monument amid controversy over whether to restore boundaries shrunk by President Trump.

Mexico is the latest example of the Western Hemisphere’s emergence as a leader in legalizing weed. It’s a remarkable shift for a region where the U.S. government has led a decades-long campaign against the cultivation of marijuana, coca and opium poppy.

In the shift toward legalization of marijuana, the Americas have emerged as a leader. This is a remarkable shift for a region that includes some of the world's leading producers of marijuana, coca and opium poppy, and where the U.S. government has spearheaded a decades-long campaign against cultivation of the substances.

In October and November, more than 10,500 children crossed the U.S.-Mexico border by themselves, the vast majority from El Salvador, Guatemala and Honduras, according to U.S. government data. That's a 106 percent increase over the same period last year.

A June 1 attack on a U.S. outpost near the Afghanistan-Pakistan border was much worse than originally disclosed by the military as insurgents pounded the base with a truck bomb, killing two Americans, including a soldier based at Joint Base Elmendorf-Richardson, and seriously wounding about three dozen troops, officials acknowledged Saturday.