It’s been a rallying cry for activists and a key talking point for diplomats. For decades now, 2 degrees Celsius (3.6 degrees Fahrenheit) of global warming has been viewed as a “do not cross” line in climate policy, a temperature at which cataclysmic and potentially permanent damage to the planet would take hold. Countries that signed on to the 2015 Paris Agreement vowed to keep global warming “well below” 2 degrees Celsius of warming since the Industrial Revolution. National policies and international agreements are evaluated for how well they can help meet this target. There’s a general sense that if the world’s governments work fast enough and hard enough, we can still avoid the worst. But what if that goal was not as realistic as many have assumed? Get Grist in your inbox Always free, always fresh Ask your climate scientist if Grist is right for you. See our […]