SAVING THE OZONE LAYER Thirty years ago, scientists fought to stop the destruction of Earth's protective ozone layer. Did their rescue effort work?

摘要

Global warming is ahot topic today. But30 years ago, the ideaof pollution causingthe planet to heat upwas still a small blipon scientists' radar.Instead, their atten-tion was on anotherpressing environmen-tal issue: Earth's dis-appearing ozone layer. This layer ofgas high in the atmosphere shields usfrom the sun's harmful rays.