A Madison Water Utility Crew works to dig up and replace a broken water shutoff box in preparation for a larger pipe-lining project. Madison started using copper instead of lead pipes in the late 1920s.
Cheryl Corley/NPR
hide caption
A Bolivian farmer harvests organic quinoa in his fields in Puerto Perez, Bolivia. Some researchers are working with quinoa farmers in Bolivia and Peru to try to develop internal markets for threatened varieties — for example, in hospital and school food programs.
Juan Karita/AP
hide caption
A Myanmarese migrant and her child seek care at a refugee health clinic in Mae Sot, Thailand. Mae Sot, a town along the Thai-Myanmar border, is home to many Myanmarese migrants, some of whom are there illegally.
Wudan Yan/for NPR
hide caption
The village of Hoosick Falls, N.Y., sits along the Hoosick River in eastern New York. Elevated levels of a suspected carcinogen known as PFOA were found in the village's well water, which is now filtered.
Hansi Lo Wang/NPR
hide caption
Dr. Dorry Segev (right), of Johns Hopkins Medicine, led the team of doctors that transplanted an HIV-positive liver and kidney into two different HIV-positive patients this month.
Johns Hopkins Medicine
hide caption
Fatty plaque (shown here in yellow) blocks about 60 percent of this coronary artery's width. The increasing thickness of artery walls is just one factor that can increase vulnerability to a heart attack or stroke.
Prof. P.M. Motta/G. Macchiarelli, S.A. Nottola/Science Source
hide caption
A pregnant woman gets an ultrasound to monitor for the birth defect microcephaly, in Guatemala City last month.
Johan Ordonez/AFP/Getty Images
hide caption
Bottles of the abortion-inducing drug RU-486, which is used to medically induce abortions in a two-step process. Women take mifepristone (left), and days later, they take misoprostol.
Charlie Neibergall/AP
hide caption
An oil field truck is used to make a transfer at oil-storage tanks in Williston, N.D., in 2014. It was atop tanks like these that oil worker Dustin Bergsing, 21, was found dead.
Eric Gay/AP
hide caption