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NPR's Melissa Block talks to Dr. Matthew Willis, the public health officer in Marin County, Calif., one of the strongest centers of vaccine opposition. He talks about the state Senate education committee's approval of a bill Wednesday that would require schoolchildren to be vaccinated.

The lawsuit, brought by former players, could cost the league up to $1 billion. The settlement had originally been reached in 2013.

The human-trafficking measure had been stuck in the Senate because of an impasse over language on abortion funding. That has now been resolved.

NPR's Melissa Block speaks to Brian Deese, President Obama's senior adviser in charge of climate policy, about the Obama administration's push for new restrictions around power plant emissions.

In Michigan's orchard country, extreme heat and cold can mean disaster for fruit growers. Now some are using a new twist on old technology to fool trees when sudden, unexpected weather changes occur.

It had been more than 40 years since the Calbuco volcano erupted. It's blown twice this week — generating striking images and concerns over the effects of both the lava and a mammoth cloud of ash.

By editing the genes in embryos in the lab, Chinese scientists showed that it's possible to change hereditary traits that cause a blood disorder. But the work also created unintended mutations.

The USAID contractor was kidnapped in 2011 from his home in Pakistan just days before he was scheduled to leave the country. He spent much of his career in some of the world's toughest places.

A Boston jury is weighing whether Dzhokhar Tsarnaev should be put to death for his crimes.

Two new books focus on the culinary lives of these two artists. Turns out, their approaches to food provide a new way of thinking about their two very different approaches to art.