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Rethinking Climate Change: The Past 150 Years and the Next 100 Years (MIT)
At a time of great political paralysis around climate change internationally
-- and apparent backtracking by American politicians and the public on the
science of global warming itself -- there are “reasons to rethink our
approach,” says moderator **John Reilly**. He hopes to “create a civil
discourse that helps us understand better the varied concerns of people on the
topic.”
Panelists sketch the past, present and future of climate change. **Kerry
Emanuel** reviews the science of climate change, noting that the greenhouse
effect discovery dates back to the 18th century, and that by the end of the
19th, scientists had already begun worrying that consumption of fossil fuel
and the accompanying release of CO2 would lead to an increase in surface
temperatures of 5-6°C. Modern science with its ice core measurements has
tracked dramatic temperature changes on earth over tens of millions of years.
But the last 100 years have been unprecedented, with the famous hockey stick
illustration capturing the connection between human industry and increased CO2
release. When scientists run some models forward, they show temperature
increases ranging from 1.5 to 4°C. While these projections contain
uncertainty, says Emmanuel, “this does not mean we should do ...