Each year, the depleted region in Earth's protective ozone layer over the Antarctic, or "ozone hole," reaches its largest size during a period in September. Data from a NASA satellite are now in, and images created from the data reveal the extent of the hole in 2007 was about average when compared to measurements from the last few decades.
NASA studies ozone to better understand its relation to air quality and climate." Learn about the "depleted region in Earth's protective ozone layer over the Antarctic," how plants are "used to study air quality from the ground by seeing how ozone ... damages the leaves," and more.
From the National Aeronautics and Space Administration (NASA).
URL: http://www.nasa.gov/vision/earth/environment/ozone_resource_page.html
