Climate COP26 Magic 1.5

FILE – People attend a Climate Strike demonstration in Zurich, Switzerland, Nov. 6, 2021. The overarching phrase that dominates Glasgow climate talks is simply a number: 1.5. That’s the chief but elusive goal of negotiations. It’s keeping warming to 1.5 degrees Celsius since pre-industrial times. (Michael Buholzer/Keystone via AP, File)