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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.

Patients escape. Long gloves, chlorine and toilets are in short supply. Despite promises of international aid, the essentials of medical care are still missing at one Sierra Leone treatment center.

Meryl Streep won a Golden Globe for her performance as Margaret Thatcher in The Iron Lady. She talks about preparing for that role and how her perceptions of herself have changed over the years.

Less than three years ago, Facebook purchased Instagram for $1 billion. The photo-sharing service is said to have more than 300 million users.

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.

Two-thirds of the food Cubans eat is imported — but the reestablishment of ties with the U.S. could open opportunities for American farmers.

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

The FBI released a statement on Friday saying that the North Korean government is responsible for the massive cyberattack against Sony Pictures Entertainment.

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.

In our weekly roundup of tech headlines, we get you up-to-date on Sony's troubles after North Korea targeted its film The Interview, and tell you a community organizer's advice for tech companies.