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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.

In her new book, Sugar in the Blood, Andrea Stuart weaves her family story around the history of slavery and sugar in Barbados. Stuart's great-great-great-great-great-great-great-great-grandfather landed on the island in the 1630s. He had been a blacksmith in England, but became a sugar planter in Barbados, at a time when demand for the crop was exploding worldwide. Stuart is descended from a slave owner who, several generations after the family landed in Barbados, had relations with an unknown slave.

Government agencies do not often acknowledge their own errors, but the CIA has done just that with the declassification of intelligence memoranda on the 1973 Arab-Israeli War.

The documents show that agency analysts, down to the last minute before the outbreak of fighting, were assuring President Nixon, Secretary of State Henry Kissinger and other policymakers that Egypt and Syria were unlikely to attack Israel.

For anyone who lived in New York during his tenure — and even if you didn't — Ed Koch was a larger-than-life figure, a feisty, combative and mostly-successful mayor who, for better or worse, dramatically changed the city and left his mark in the history books.

But how will history judge him?

Yo La Tengo wouldn't seem to be very rock 'n' roll, given that it's a very stable and long-lasting operation. Since 1991, the lineup has consisted of a married couple — drummer Georgia Hubley and guitarist Ira Kaplan, along with bassist James McNew — and all three play additional instruments as needed. Yo La Tengo has been with the same label, Matador, since 1993. But if the band lacks rock dramatics, I would argue that it knows as much about the modes and manners of rock 'n' roll as anyone who has ever played the music.

Singer-songwriter Angelique Kidjo was born in Benin, West Africa. Today, she lives in New York City and is widely considered Africa's greatest living diva.

For Kidjo, music provides an outlet for both activism and pleasure. "Those two things are part of my stability," she tells NPR's Michel Martin. "I need that. No human being has endless compassion, you need to replenish yourself, and I know that if I didn't have music, I'd go crazy."

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.

When Wal-Mart calls, Herman Farris always finds whatever the retailer wants, even if it's yucca root in the dead of winter. Farris is a produce broker in Columbia, Mo., who has been buying for Wal-Mart from auctions and farms since the company began carrying fruits and vegetables in the early 1990s.

During the summer and fall, nearly everything Farris delivers is grown in Missouri. That's Wal-Mart's definition of "local" — produce grown and sold in the same state. In winter, it's a bit tougher to source locally.

Greeks are feeling the squeeze. The social repercussions of three years of austerity measures imposed by international lenders are hitting hard. Thousands of businesses have shut down, unemployment is nearly 27 percent and rising, and the once dependable safety net of welfare benefits is being pulled in.

With further cutbacks and tax hikes about to kick in, Greece's social fabric is being torn apart.

Nowhere are cutbacks more visible and painful than in health care.

Great blackout last night, right?

It's been clear for some time that substantially more people watch the Super Bowl than have the slightest interest in watching the actual football game. That's why there's such hubbub over the halftime show and the commercials — it gives non-football types something to pay attention to instead of football.