NASA's been tracking the thinning of the ozone layer the south pole for nearly 20 years. In this slowed-down animation, you can watch the ozone hole's averag...
See the Hole in the Ozone Layer (1979 - 2012)
Ozone Layer Depletion HD
Discovery of the ozone hole | Natural History Museum
NASA | Exploring Ozone
Ozone Layer & Hole - Video for Kids
The Earth's Ozone Hole from 1979-2007