Robert Siegel

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ROBERT SIEGEL, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Robert Siegel. We're continuing to follow developments in yesterday's deadly shooting at Fort Hood that left four people dead and 16 wounded. This afternoon, the commander of Fort Hood, Lieutenant General Mark Milley, confirmed the identity of the shooter.

LIEUTENTANT GENERAL MARK MILLEY: We are able to release, his next kin have been notified. The alleged shooter is Specialist Ivan A. Lopez. He is 34 years old, originally from Puerto Rico.

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ROBERT SIEGEL, HOST:

Time now for your letters. First, two corrections. On Monday, we took you to the South by Southwest Festival in Austin to tell you about something called Oculus Rift. It is a virtual reality headset. And in our story, we mistakenly said that it would be available to consumers in 18 to 20 months. In fact, there is no release date yet for a consumer model. Only the development kit is currently available.

MELISSA BLOCK, HOST:

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ROBERT SIEGEL, HOST:

Long-time fans of the comedy website, "Funny or Die," know this already. But for the rest of you, this is the theme song of "Between Two Ferns." The Web series mimics a low-budget, cable-access interview program.

MELISSA BLOCK, HOST:

It's the brainchild of actor and comedian Zach Galifinakis. He plays an unprepared host who fumbles through awkward conversations with celebrities. But the guest of his latest episode, released today, was a little different.

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Now, health and electrical lighting. Last month, Mariana Figueiro showed me something she has developed to help seniors avoid falls in the night. Figueiro researches health applications at the Lighting Research Center at Rennselaer Polytechnic Institute in Troy, New York. Her project is a nightlight. But it's not just a single bulb. It's a string of yellow lights that border the darkened entrance to, say, a bathroom.

It's a doorway and around the frame of the doorway are the yellow LEDs?

MARIANA FIGUEIRO: That's correct.

The Gulf nation of Qatar has nearly depleted its groundwater, and will increasingly need to import food. Some farms still operates on ground water, but in the long haul, Qatar is counting on desalination and using money to import food.