Climate Scientist: World’s Richest Must Radically Change Lifestyles to Prevent Global Catastrophe

The 24th United Nations climate summit comes amid growing warnings about the catastrophic danger climate change poses to the world. In October, the U.N. Intergovernmental Panel on Climate Change warned that humanity has only a dozen years to mitigate climate change or face global catastrophe-with severe droughts, floods, sea level rise and extreme heat set to cause mass displacement and poverty. But on Saturday, the United States, Saudi Arabia, Russia and Kuwait blocked language "welcoming" the landmark IPCC climate report. New studies show global carbon emissions may have risen as much 3.7 percent in 2018, marking the second annual increase in a row. A recent report likened the rising emissions to a "speeding freight train." We speak with Kevin Anderson, professor in climate change leadership at Uppsala University's Centre for Environment and Development Studies, and 15-year-old climate activist Greta Thunberg about the drastic action needed to fight climate change and the impact of President Trump on climate change activism.