Captain Edward Teach, better known as Blackbeard, is said to have tucked slow-burning fuses into his beard and lit them on fire before plundering towns for gold and rum.
Hulton Archive Circa/Getty Images
Some scientists think new types of bird flus should arise only in chickens, not in labs. Here a worker collects poultry on a farm in Kathmandu, Nepal, where the H5N1 virus was infecting animals in October 2011.
Prakas Mathema/AFP/Getty Images