“Despite the fact that tackling climate change will be more difficult, I still think there are important lessons to learn from the ozone success story. We can tackle real global problems. We can involve every country in this process. And we can take action quickly when we’re running up against time. Perhaps the fact that we rarely talk about the ozone layer anymore is a testament to our success in tackling it, but it serves us well to remind ourselves that we are capable of cooperating on such global problems, which is why I like to return to and relive the story every so often.” – Hannah Ritchie