The job of the ozone layer is to filter out medium level ultraviolet light from the sun and, without an ozone layer, the fears were that we would see cases of eye damage and skin cancer rocket. The hole in the ozone layer was the poster child for the climate change cause – a very visible sign of what we were doing to the planet through human activity, and governments around the world started to ban products and raise awareness with the aims of stopping the hole in the ozone layer getting any bigger.
Recent reports however have shown that not only has the hole in the ozone layer stopped growing, it appears to be healing itself.
The size of the hole in September 2015 was 4 million square kilometres smaller than it was back in 2000, an area equivalent to half of the size of the USA.
So what's going on and are there any secrets which can be shared for the resolution of other environmental concerns?