Millions of gallons of water used to flow every day from the Rocky Mountains to the Gulf of California. Now, the Colorado River ends at Morelos Dam on the U.S.-Mexico border. Below it, one of North America's largest wetlands is dry.
Karl Flessa, a geoscientist at the University of Arizona, began researching the damage two decades ago. Then he started asking how much water it would take to bring back some of the habitats.
Former President George W. Bush worked with many world leaders while in office. Now, he's unveiling 24 portraits he painted of some of them. As Lauren Silverman of KERA reports, the exhibit will be at his new presidential library.
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It's ALL THINGS CONSIDERED from NPR News. I'm Robert Siegel.
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U.S.-Russia relations have deteriorated since Russia's annexation of Crimea and there are still questions over Russian President Vladimir Putin's agenda in Ukraine and Eastern Europe. Targeted sanctions, political isolation and NATO's plans to beef up its presence in Eastern Europe haven't persuaded Putin to change course.
NPR's Soraya Sarhaddi Nelson has more from Moscow.
There's a small frame hanging on the wall near the computer Josie Maisano uses to search for work. Inside there's a picture of her at this year's State of the Union address and a blue ribbon that Democrats wore that night to highlight the plight of people like Maisano, whose unemployment benefits stopped at the end of December.
"Oh, my God. It was just a once-in-a-lifetime experience," says Maisano. "Listening to President Obama, it was just very, very heartwarming."
David Letterman, the longest-serving late night television host, is retiring.
(SOUNDBITE OF SHOW, 'LATE NIGHT WITH DAVID LETTERMAN')
DAVID LETTERMAN: Sometime in the not-so-distant future, 2015 for the love of God, in fact, Paul and I will be wrapping things up and taking a hike.
SIEGEL: Letterman, who is 66, told the audience today during a taping of his late show program which will air tonight. Here to talk about David Letterman is NPR TV critic Eric Deggans. And Eric, why has Letterman decided to retire now?
Saving for retirement is a challenge facing most Americans. Research shows the challenge is made harder by our basic human impulses. We know we should be saving. But we don't. We consistently make bad financial decisions.
One thing that leads us astray is what behavioral economists call "loss aversion." In other words, we hate losing. And that gets in the way of us winning — if winning is making smart financial decisions.
Why do love and war go so well together in novels? It isn't only because they're both naturally dramatic themes. Sometimes, in fact, each is so big and overwhelming that they can seem beyond the grasp of words. And so a writer who tries to show the struggle of two people with deep feelings for each other, "set against a backdrop of violence" (as a novel's flap copy might read), can just seem like he's overreaching. But Dinaw Mengestu uses love and war to powerfully explore a third, equally dramatic theme: identity.