News From NPR

(Andy Carvin, NPR's senior strategist for social media, sends us this dispatch about a Twitter account that may hold clues in understanding the surviving Boston bombing suspect.)

Scientists have digitized and analyzed imagery taken by one of the first U.S. weather satellites to create a montage showing the extent of polar sea ice in 1964 so they can compare it to more recent satellite photos.

Now that it's spring, maybe you've decided it's time to clean out the medicine cabinet. Maybe you'd rather your teenagers not be tempted by those dusty bottles of Vicodin or other forgotten prescription drugs.

But we're told not to flush medications down the toilet because the drugs can taint rivers and lakes. Traces can also get into drinking water.

You think you're so smart. You think it's easy being the president of the United States. OK, pal — here's your chance.

One of the attractions of the new George W. Bush Presidential Library and Museum in Dallas — scheduled to be dedicated on Thursday — is Decision Points Theater, an interactive experience. The venue allows visitors to participate in a simplified simulation of the presidential decision-making process.