Porpoises leap inside a man-made lagoon in Oahu, Hawaii, 1966….



Porpoises leap inside a man-made lagoon in Oahu, Hawaii, 1966. Photograph by Thomas Nebbia, National Geographic Creative

Porpoises leap inside a man-made lagoon in Oahu, Hawaii, 1966….



Porpoises leap inside a man-made lagoon in Oahu, Hawaii, 1966. Photograph by Thomas Nebbia, National Geographic Creative

A chorus line high kicks during a show at Cafe Le Can Can in…



A chorus line high kicks during a show at Cafe Le Can Can in Miami Beach, Florida, 1963. Photograph by Dean Conger, National Geographic Creative

A chorus line high kicks during a show at Cafe Le Can Can in…



A chorus line high kicks during a show at Cafe Le Can Can in Miami Beach, Florida, 1963. Photograph by Dean Conger, National Geographic Creative

People picnic on the rocky heights that overlook Harpers Ferry…



People picnic on the rocky heights that overlook Harpers Ferry in Maryland, 1962. Photograph by Volkmar K. Wentzel, National Geographic Creative

People picnic on the rocky heights that overlook Harpers Ferry…



People picnic on the rocky heights that overlook Harpers Ferry in Maryland, 1962. Photograph by Volkmar K. Wentzel, National Geographic Creative

Seated villagers wave arms as they enact a play in front of a…



Seated villagers wave arms as they enact a play in front of a temple in Bali, Indonesia, 1969. Photograph by Donna and Gilbert M. Grosvenor, National Geographic Creative

Seated villagers wave arms as they enact a play in front of a…



Seated villagers wave arms as they enact a play in front of a temple in Bali, Indonesia, 1969. Photograph by Donna and Gilbert M. Grosvenor, National Geographic Creative

People climb on Bloody Bridge—which was built by penal colony…



People climb on Bloody Bridge—which was built by penal colony prisoners—on Norfolk Island in Australia, 1960. Photograph by J. Baylor Roberts, National Geographic Creative

A woodman notches a felled tree’s trunk for sectioning in…



A woodman notches a felled tree’s trunk for sectioning in Western Australia, 1962. Photograph by Robert B. Goodman, National Geographic Creative