'Hole in the Ozone'

This article is very short, so first, please listen to the news article: Click here to listen

Questions:
1) What measures had long ago been taken to handle the hole in the ozone?
2) In what way does the weather affect the ozone hole?
3) It is said that humans are good at reacting to emergencies but poor at preventing them. Can you think of other examples of this?

If you couldn't catch everything from listening, then please see the article here.
You can see the full BBC article here.

Example Answers:
1) About 20 years ago harmful substances such as CFCs were stopped.
2) Changing air temperatures and wind affect the ozone hole.