Ozone layer is healing
THE OZONE hole over the Arctic is finally beginning to close up, according to observations by NASA scientists. The agency's AURA satellite, a mission to study ozone and air quality, shows a long term trend that, barring unforeseen hiccups, should see the hole over the Arctic shrink to less than 13 million square km within the next 30 years. At the moment the hole is about 19 million square km, so that represents a rapid rate of repair. A new research by Leeds University says the success of the 1987 Montreal treaty is the main reason for the closing up of the ozone hole.