May 16, 1985: The British Antarctic Survey discovers the existence of a massive hole in the ozone layer over the South Pole (at right, in 2010). The group's study is published in the journal Nature.
May 16, 2001: U.S. President George W. Bush releases the National Energy Policy Report. Environmental organizations pan the report, which relied heavily on recommendations from the oil, coal and nuclear industries.
May 16, 2003: Iraq's "Marsh Arabs" launch a comeback. For centuries, Shi'ite Muslims had staked their livelihoods to the marshes south of Baghdad. But they were targeted by Saddam Hussein's Sunni government. Iraq drained the marshes in the 1970s and stepped up their efforts after the Marsh Arabs rebelled in 1991. After Saddam's government fell in 2003, the Marsh Arabs flooded the marshes again, partially restoring their homeland.
Photo: NASA Goddard Photo and Video/Flickr