There's good news for those who haven't seen an actual guinea worm. A preserved "fiery serpent" has a place in the exhibit BEYOND THE PRESIDENCY: 25 YEARS OF THE CARTER CENTER on view Mon., JULY 2, and through Nov. 25. Since 1982, former President Jimmy Carter and his wife, Rosalynn, have worked tirelessly for basic human rights worldwide. A latrine like those the Carters built for villages in need, a ballot-box bicycle from China and more on display track the center's humanitarian legacy. Free-$8. Mon.-Sat., 9 a.m.-4:45 p.m.; Sun., noon-4:45. 441 Freedom Parkway. 404-865-7100. www.jimmycarterlibrary.org.