A NASA team has attached nearly all of the hexagonal segments that will together make the primary mirror for the James Webb Space Telescope (pictured are practice segments). Chris Gunn/NASA hide caption

Attendees listen to the Republican presidential candidate debate at in North Charleston, S.C., earlier this month. Bloomberg/Bloomberg via Getty Images hide caption

Traders work on the floor of the New York Stock Exchange in New York on Jan. 4. Bloomberg via Getty Images hide caption

Brendan McInerney (front, from left), Noah Piou, Emmett Dalton and their fellow students from Roxbury Latin boys' school carry the casket of a man who was left unclaimed by family to a grave site in Fairview Cemetery on Friday. Kayana Szymczak for NPR hide caption

Tim Kilroy runs a business from his home in Arlington, Mass. His insurance company quit covering the long-acting Ritalin that helps him manage his ADHD. Ellen Webber for NPR hide caption

A doula is trained to provide advice and support for women through pregnancy and childbirth. Mike Harrington/Getty Images hide caption

Donald Trump has broken all of the rules of campaigning in New Hampshire but still leads the polls there. A vendor sells Trump buttons at a rally in Concord this month. Allegra Boverman/NHPR hide caption

Rob Oberg delivers oil to a home in south central Vermont. He works for Keyser Energy in Proctor, Vt., which provides heating fuel to about 5,000 customers. Nina Keck/Vermont Public Radio hide caption