Solomon, now at MIT, is a renowned atmospheric chemist who was the first to attribute the ozone hole to chlorofluorocarbons (CFCs). She opened the conference Friday evening with the Fred Keeley Lecture on Environmental Policy and compared the challenge of climate change to past environmental challenges–specifically, lead pollution and the ozone hole–and finds hope in the way those challenges were met.
Climate change, however, is an especially daunting problem. She said we are accustomed to dealing with environmental pollution that is reversible but the changes happening now because of manmade carbon emissions (greenhouse gases) are largely irreversible for at least 1,000 years.For more information about the Conference, check out this article.

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