Earth Day Timeline Videos

Ozone Hole Recovery

(1) tv-pg

Ozone Hole Recovery

(1 min) tv-pg

A 1986 study of the South Pole determined the cause of a hole in the ozone layer and led to an international treaty banning the production of chlorofluorocarbons (CFCs). Twenty years later, in an August 23, 2006, report, a scientist from the original expedition discusses the ozone’s slow recovery.