From the history of chlorofluorocarbon refrigerants, the ozone hole, and industry's reaction to it, do you see parallels between this and the reaction of some industries to the science of climate change? When did it become possible to get industry to buy-in to fighting the ozone hole by signing the global treaty of the Montreal Protocol? What is needed for a similar outcome for addressing climate change? Compare the similarities and differences between the challenges of stratospheric ozone depletion and climate change. How will the approach used for addressing ozone depletion have to be modified for addressing climate change?