The urgency to solve our climate crisis feels something like a ship heading off course: The longer you delay, the more you have to turn the wheel.
Consider these numbers: 2, 350, 1990. These were the original climate goals. In 1975, at the time of the first Greenpeace whale campaign, environmental economist William Nordhaus proposed that the danger threshold for a temperature increase above Earth’s preindustrial average would be 2°C. This goal was not considered entirely safe, but beyond this target we risked severe climate disruption and likely runaway heating.
Dr James Hansen, 2016
The 350 figure came from several climate scientists, including Dr James Hansen, who co-authored the first NASA global temperature analysis in 1981. Hansen proposed that to remain below the 2°C target, we w... Read more >