McKinney described the problem in his 1989 book The End of Nature (still one of the most influential books on climate):
“We’re like the patient that goes to the doctor and learns he’s overweight, or his cholesterol is too high. He doesn’t die immediately—but until he changes his lifestyle and gets back down to the safe zone, he’s at more risk for heart attack or stroke,” says McKibben. “The planet is in its danger zone because we’ve poured too much carbon into the atmosphere, and we’re starting to see signs of real trouble: melting ice caps, rapidly spreading drought. We need to scramble back as quickly as we can to safety.”
“Scrambling back” requires all nations to transform energy infrastructures, including transportation and power structures, becoming more energy efficient, using solar arrays instead of coal, planting trees instead of cutting down forests, reducing waste.
“Getting to 350 means developing a thousand different solutions—all of which will become much easier if we have a global treaty grounded in the latest science and built around the principles of equity and justice,” the group reports. “To get this kind of treaty, we need a movement of people who care enough about our shared global future to get involved and make their voices heard.”