Five months after the U.N. climate summit in Glasgow last fall, U.S. climate envoy John F. Kerry says he doesn't see proof that nations are following through on their commitments to slow Earth’s warming.
Is coal-burning in the midst of being banished from the world's energy systems? Or is it, on the contrary, bouncing back as countries reboot their economies after the pandemic lockdown?
As world leaders gathered in Glasgow for the COP26 United Nations climate change conference, a number of Pittsburghers are joining them to tell the city's story.
