By 2050, over 215 million people—more than the population of Brazil—will be displaced from their homes and communities because of climate change, according to the World Bank.
For Steven Chu, Nobel Prize-winning physicist and former U.S. Secretary of Energy who lectured at Northwestern University on April 2, these "climate refugee" predictions issue a stark warning: Without immediate, coordinated action, the world is headed toward a climate disaster.
Chu drew on his experience as both a scientist and former Cabinet member to outline the urgent steps needed to achieve net-zero global greenhouse gas emissions and avoid some of climate change’s major consequences.
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