International.
Researchers at the Massachusetts Institute of Technology (MIT) have found that thinning in the ozone layer over Antarctica is beginning to heal.
The scientists compared the 'thinning' between 2000 and last year, and found that the hole above Antarctica is now around four million square kilometers, which is about the size of India, but smaller than the hole before.
Professor Salomon and her colleagues made their discovery while making detailed measurements, through weather balloons, satellites and simulation models, of the amount of ozone in the stratosphere between 2000 and 2015.
The professor said that "although we eliminated the production of CFCs in all countries, including India and China, around the year 2000, there is still a lot of chlorine left in the atmosphere." He went on to say that this will take between 50 and 100 years to break down, predicting that recovery won't be complete until at least 2050 or 2060.
