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New research suggests that curiosity triggers chemical changes in the brain that help us better understand and retain information.

AR 2192, the largest sunspot seen since the beginning of the current 11-year cycle that started in 2008, is producing strong solar flares.

Like most people in Monrovia, our correspondent is constantly washing her hands with chlorinated water. But her booted feet are drawing strange looks.

From a quiet backwater, the former Portuguese colony of Macau has developed a sparkling skyline and 35 casinos with revenue six times that of Las Vegas — and more on the way.

George Risi spent a month in Sierra Leone. The infectious disease specialist cared for more than 300 patients. About 100 died. Nothing could have prepared him for the experience.

Brad Clark, Director of HRC’s Project One America, says over the last few years, there has been incredible progress for Lesbian, Gay, Bisexual and…

The winner of the Nobel Peace Prize will be announced Oct. 11. There are some expected names and a few surprising ones on the this year's list of nominees.

Activists in Hong Kong have spent a week protesting for democracy. The situation is escalating, with police using tear gas. NPR's Scott Simon speaks with correspondent Anthony Kuhn in Hong Kong.

Brazilians head to the polls Sunday in one of the most exciting elections in recent history there. The presidential race pits two women against each other — a first for the South American country.

October has arrived, and with it baseball's postseason playoffs. NPR's Scott Simon breaks down the division series with Bloomberg's Kavitha Davidson.