Apollo 8 earthriseDec. 24, 1914:   John Muir, founder of the Sierra Club and inspiration for some of America’s most iconic National Parks, dies in Los Angeles at age 76.

Dec. 24, 1968:  The three-man crew of the Apollo 8 spacecraft become the first to orbit the moon, and they send a Christmas Eve gift back to earth:  The first-ever picture of an earthrise.

Dec. 24, 1991:  Three years after a polluted Boston Harbor becomes a campaign weapon in George H.W. Bush’s Presidential campaign against Massachusetts Governor Michael Dukakis, sewage dumping into Boston Harbor ceases.

Photo: Wikimedia Commons

This feature is compiled by Peter Dykstra, an MNN contributor and publisher of Environmental Health News and The Daily Climate.