NPR News

This interview was originally broadcast on April 12, 2011. 1861: The Civil War Awakening is now available in paperback.

The first shots of the American Civil War were fired almost 151 years ago in the Charleston, S.C., harbor. Less than two days later, Fort Sumter surrendered. It would take the Union army nearly four years to bring the coastal fortification back under its command.

Unmanned aircraft systems, or drones, have long played a role in military operations. But imagine thousands of drones flying over U.S. skies — something we may see in just a few years. In February, President Obama signed an aviation bill requiring the Federal Aviation Administration to make plans to integrate drones into American airspace.

What is it with heavy metals showing up in cosmetics?

First it was lead in lipstick. Now, the Food and Drug Administration warns that some beauty products made overseas contain mercury.