Science & Technology

In shorthand often used to describe the brain, fear is controlled by a small, almond-shaped structure called the amygdala.

But it's not quite that simple, as a study published Sunday in Nature Neuroscience demonstrates.

This Black History Month, Tell Me More is taking a look at African Americans in the STEM fields (science, technology, engineering and math) who are inspiring future generations.

Today, Barrington Irving shares how his sky high dreams became a reality. A chance encounter in his parents' bookstore put him on a path that would make him the youngest person and first African American to fly solo around the world.

Refrigerators, foam buoys and even ketchup bottles are piling up on Alaska's beaches. Almost two years after the devastating Japanese tsunami, its debris and rubbish are fouling the coastlines of many states — especially in Alaska.

At the state's Montague Island beach, the nearly 80 miles of rugged wilderness looks pristine from a helicopter a few thousand feet up. But when you descend, globs of foam come into view.

The U.S. government is investing millions of dollars in what it considers a promising new industry for American manufacturing: nuclear reactors. The plan is to build hundreds of mini-reactors, dot them around the U.S. and export them overseas.

The last few years have been especially tough in South Florida for wading birds such as egrets, herons, ibises and wood storks that feed and nest in the region's wetlands.

The problem is there are fewer wetlands, and the last few years have been dry, reducing water levels in critical areas.