Guided by biologists, volunteers briefly catch, band and release some of Delaware's visiting red knots each spring to monitor the health of the species.
Maggie Starbard/NPR
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Gary Kendrick, 8, works on his freestyle stroke with help from a counselor at Ransom Everglades School. Kendrick did not know how to swim before he started lessons at the school.
Wilson Sayre/WLRN
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Lissette Encarnacion in her apartment at The Brook, a supportive housing complex in the New York City borough of the Bronx.
Natalie Fertig/WNYC
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Volunteers at the Lincoln Memorial help roll up a giant banner printed with the Preamble to the Constitution during an October 2010 demonstration against the Supreme Court's Citizens United ruling.
Chip Somodevilla/Getty Images
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Austrian pianist Paul Wittgenstein (who later became an American citizen) lost an arm in World War I. He commissioned composers including Maurice Ravel to write pieces for the left hand alone.
Bettmann/CORBIS
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