Democratic presidential candidate Bernie Sanders has released a $16.3 trillion climate plan that builds on the Green New Deal and calls for the United States to move to renewable energy across the economy by 2050 and declare climate change a national emergency. While the Vermont senator had already endorsed the sweeping Democratic proposal to combat climate change and had teamed up with Rep. Alexandria Ocasio-Cortez of New York on climate legislation, Sanders’ climate plan provides the most detail yet on how he envisions the climate change moonshot taking shape if he is elected president.