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How Peppermint Tricks Us Into Feeling (Deliciously) Cold

We have the chemical menthol to thank for the wonderful mouth-feel of peppermint. Scientists now know that menthol fools the brain by activating receptors involved with sensing cold.

The Africa I Know Isn't The Africa In The Headlines Today

In 1990, our commentator visited Africa and fell in love with the energy and dreams of its people. Today he sees a land full of promise. But Ebola has revived the image of Africa in chaos.

New Federal College Ratings Will Consider Aid, Total Cost, Employment

A framework for measuring opportunity and outcomes.

Antarctic Holiday: A Christmas Feast In The Loneliest Spot On Earth

For Dr. Gavin Francis, Christmas Eve marked the start of a year-long stay in an icy research base 8,700 miles from home. In this "empire of ice and isolation," he says, food is essential to morale.

The Fate Of The Administration's College Ratings

Some say a vaunted attempt to improve the quality of colleges is dead on arrival. Let's find out why.

With A Presidential Vote, Tunisia Seeks A Peaceful Transition

Tunisia launched the Arab uprisings four years ago when it ousted a dictator. Sunday's presidential election heralds the country's steady, but not-yet-guaranteed progress.

'Rum, Rumba, And Romance': A Book On Cuba's Enduring Mystique

This week, President Obama announced that he will begin to normalize relations with Cuba. Cuban-American writer Richard Blanco recommends a book about Cuba's imprint on the American imagination.

At Last, I Meet My Microbes

At 31, a woman had the bacteria in her gut catalogued as part of scientific project that aims to characterize the creatures that live inside us and affect our health. Here's what she found out.

CEO Says Sony Pictures 'Did Not Capitulate,' Is Exploring Options

Melissa Block talks to Sony Pictures CEO Michael Lynton about the cyber attack against his company and the cancellation of the Christmas Day release of The Interview.

Obama's Wide-Ranging, Year-End News Conference

The president discussed issues ranging from normalization of relations with Cuba to Sony Pictures' decision to cancel release of the film 'The Interview' after a North Korean hack attack.

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