As physicians, we are trained to respond to emergencies - the more serious the diagnosis, the more quickly we respond. Physicians, as guardians of human health, should be actively engaged in addressing the dangers of global warming, yet we are failing to act in a meaningful and substantive way. Fortunately, there are tools to help us act, including fossil-fuel divestment, an idea similar to the divestment campaign of the 1980s that helped topple South African apartheid. The idea of fossil-fuel divestment is based on what has been called the "terrifying new math."1 Global climate experts and governments have accepted the scientific consensus that an increase in global temperature must be held below two degrees celsius.
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