If we keep raising carbon dioxide levels, we may not be able to think straight anymore. At a thousand parts per million (which is within the realm of… - Bill McKibben

So now we have some sense of what it’s like: a full-on global-scale crisis, one that disrupts everything. Normal life—shopping for food, holding a wedding, going to work, seeing your parents—shifts dramatically. The world feels different, with every assumption about safety and predictability upended. Will you have a job? Will you die? Will you ever ride a subway again, or take a plane? It’s unlike anything we’ve ever seen. The upheaval that has been caused by Covid-19 is also very much a harbinger of global warming. Because humans have fundamentally altered the physical workings of planet Earth, this is going to be a century of crises, many of them more dangerous than what we’re living through now. The main question is whether we’ll be able to hold the rise in temperature to a point where we can, at great expense and suffering, deal with those crises coherently, or whether they will overwhelm the coping abilities of our civilization... The pandemic provides some useful sense of scale—some sense of how much we’re going to have to change to meet the climate challenge.

It worries me because it alters perception. TV, and the culture it anchors, and drowns out the subtle and vital information contact with the real world once provided.

But in August 2018, a massive new study found something just as frightening: crop pests were thriving in the new heat. “It gets better and better for them,” said one University of Colorado researcher. Even if we hit the UN target of limiting temperature rise to two degrees Celsius, pests should cut wheat yields by 46 percent, corn by 31 percent, and rice by 19 percent. “Warmer temperatures accelerate the metabolism of insect pests like aphids and corn borers at a predictable rate,” the researchers found. “That makes them hungrier[,] and warmer temperatures also speed up their reproduction.”