On this day: March 29

Published On: Mar 26 2013 11:37:13 AM CDT   Updated On: Mar 29 2016 01:00:00 AM CDT

Coca-Cola is brewed for the first time, Elvis Presley begins boot camp, the last U.S. soldiers leave Vietnam, Henry Fonda wins his first and only Oscar, and the Tennessee Lady Vols complete an unbeaten season, all on this day.

OTD March 29 - Earth Hour
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2008: Thirty-five countries and more than 370 cities join Earth Hour for the first time, with households and businesses encouraged to turn off their non-essential lights for one hour to raise awareness about the need to take action on climate change. Shown here is the darkened Empire State Building in New York City during Earth Hour in 2009.

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