Nations Vet 3,000-page Handbook to Halt Climate Crisis

FILE - In this Aug. 7, 2011 file photo, Somali refugees herd their goats at the Ifo refugee camp outside Dadaab, eastern Kenya, 100 kilometers (62 miles) from the Somali border. Climate change could push more than 200 million people to move within their own countries in the next three decades and create migration hotspots unless urgent action is taken. (AP Photo/Jerome Delay, File)

Nearly 200 nations gather Monday to grapple with a question that will outlive Covid-19 and Russia's invasion of Ukraine: how does a world addicted to fossil fuels prevent carbon pollution from making Earth unliveable?

A partial answer is set for April 4 after closed-door, virtual negotiations approve a nearly 3,000-page report detailing options for drawing down greenhouse gases and extracting them from the air.