News & Politics
In his remarks to global leaders, President Joe Biden said climate change is "ravaging the world" -- a message that is likely to be repeated at the U.N. summit on climate change. World leaders, researchers and activists all say we are at a tipping point to reduce emissions. But getting commitments that translate to real change is no small lift. William Brangham reports on the stakes of the summit. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders