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Iranian Maryam Mirzakhani, a professor at Stanford, was among four winners of the Fields Medal. She said she hopes the win "encourages young female scientists and mathematicians."

Its birthrate is the world's highest: seven kids per woman. There's not enough fertile land to feed everyone. So Niger is telling its men that a big family is not the only way to be a Big Man.

These low-benefit plans are part of a strategy that lets workers and employers avoid health law penalties but may not provide substantial coverage.

Researchers say that in countries where clean water and soap are plentiful, there may be no additional benefit from installing sanitizer dispensers in classrooms.

Paid paternity leave is a luxury in the U.S. Just 10 to 15 percent of employers offer it, even though an increasing number of fathers want, and expect, time off with a new child.

Robert Siegel speaks with local political leader Patricia Bynes of Ferguson, Mo., about the clashes between residents and police taking place there since the weekend. Unrest erupted after an unarmed black teenager was shot and killed by police recently in the St. Louis suburb.

The era of Iraqi Prime Minister Nouri al-Maliki appears to be coming to an end after eight turbulent years. Haider al-Abadi, the man set to replace him, is not a previously well-known figure. NPR's Alice Fordham has interviewed him, and she tells Melissa Block more about him.

The International Mathematical Union has announced the four winners of its prestigious Fields Medal. The group includes Maryam Mirzakhani, the first woman to win the prize in its long history.

Projections suggest that climate change will hurt agriculture in most parts of the world. But some areas of the U.S. could actually see a benefit as corn production moves farther north.

It's not just Americans who are oversalted. A new study reports that sodium takes a global toll, attributing 1.65 million deaths from cardiovascular disease to sodium consumption.