The Hole in the Ozone Layer Is at Its Smallest in Nearly Three Decades

Although phasing out the chemicals that caused the ozone hole has led to gradual improvement, natural variability in the climate has also played a role.

Updated On 01/17/2018 at 08:39PM EST
5:33 PM EST
The hole in Earth's protective ozone layer that forms over Antarctica each September was the smallest seen since 1988, according to NASA and NOAA. | NASA's Goddard Space Flight Center/Kathryn Mersmann