Ozone hole shrinks to smallest size since 1985

The ozone hole near the south pole this year is the smallest since it was discovered in 1985, NASA scientists announced.

According to the Washington post, scientists said that this is due more to freakishly warm Antarctic weather than the decades long effort to reduce the use of chlorinated chemicals that cause the seasonal gap.

The ozone, which protects earth from the harmful ultraviolet (UV) rays, has an average hole of 9.3 million square kilometers. It is caused by Chlorine in the air that needs cold temperatures in the stratosphere and clouds to convert into a form of the chemical that eats ozone.