Our comforting sense of the permanence of our natural world, our confidence that it will change gradually and imperceptibly if at all, is the result … - Bill McKibben

[D]ata from the World Meteorological Agency show that, as the U.N. Secretary-General, António Guterres, told the {COP28} global climate talks in Dubai last week, we can safely say, even with weeks to go, that 2023 will take the title {as the world's hottest year on record}. . . . And yet . . . [a]lmost simultaneous with the breakout in temperature, there was a breakout in the installation of renewable energy, especially solar power, around the world. . . . {T}he cost of clean energy has dropped so far that it is now possible that saving the planet might be a corollary of saving cash. This ongoing drop in price is more than a decade old, but sometime in the past few years it crossed an invisible line, making it cheaper than hydrocarbons, and this was the year when that reality finally translated into dramatic action on the ground. . . . There are plenty of other technologies we’re [currently] spending money on, including small nuclear reactors and giant carbon-sucking machines, that may or may not someday play a role in the climate fight, but, for all the furor they produce, they seem unlikely to make much difference anytime soon. In the next few years, while the planet’s climate system teeters on the edge of breaking, it’s sun, wind, and batteries that matter. They’re cheap, and they’re ready.

Fair or not, boomers and the Silent Generation have about 70% of the country’s money, compared with about 5% for millennials. So if you want to push around Washington, or Wall Street, or your state capital, it helps to have some people with hairlines like mine.

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.