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In 1987, James Hansen, director of the Goddard Institute for Space Studies, appeared before Congress to present the current state of the warming atmosphere. Hansen indicated that if the concentration exceeded 350 ppm, it could cause environmental problems like greater and more frequent storms. While the earth was being subjected to global warming, the impact of this warming has been addressed as climate change. A team of 200 scientists, engineers, and scientists worldwide came together in Project Drawdown to develop 100 creative ideas that will do exactly that, and it was compiled in Drawdown, a book edited by Paul Hawken. These potential solutions to the climate change problem can be ranked as to how cost-effective they are, how quickly they can be implemented, or how beneficial they are to society. The chapter shows a list of the top 20 solutions from the food sector and the energy sector.