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What amount of greenhouse gases will be added to the atmosphere? How warm will the Earth become? Humankind's effect on this planet will be explored in this course by answering these questions and many others. Today humanity uses the equivalent of 1.5 planets to provide the resources we use and absorb our waste; our demand exceeds our capacity to re-generate. This course will open your eyes to how we endanger our only world and how we can make a difference.