The hole in the ozone layer has always been a big problem for global environmentalists. Without the ozone layer, human beings would be killed by ultraviolet rays. But today, NASA released a 2014 report on the area of the ozone layer, which is gratifying.
As of September 1, 2014, the hole area in the ozone layer is 93000 square kilometers, which is the same as that in 2013, and even smaller than 115000 square kilometers in 2000.