Reaching net zero in the U.S. will require putting such wrangling aside. It will require building out the transmission system while, at the same time, expanding its capacity so that hundreds of millions of cars, trucks, and buses can be run on electricity. It will require installing tens of millions of public charging stations on city streets and even more charging stations in private garages. Assembling the electric cars and trucks will, in turn, necessitate extracting nickel and lithium for their batteries, which will mean siting new mines, either in the U.S. or abroad. The new cars and trucks will themselves have to be manufactured in an emissions-free manner, which will involve inventing new methods for producing steel or building a new infrastructure for capturing and sequestering carbon.

The list goes on and on. The fossil-fuel industry will essentially have to be dismantled, and millions of leaky and abandoned wells sealed. Concrete production will have to be reëngineered. The same goes for the plastics and chemicals industries. Currently, ammonia, a critical component of fertilizer, is produced from natural gas, so the fertilizer industry will also have to be refashioned. Practically all the boilers and water heaters that now run on oil or gas, commercial and residential, will have to be replaced. So will all the gas stoves and dryers and industrial kilns. The airline industry will have to be revamped, as will the shipping industry. Farming is responsible for roughly ten per cent of America’s greenhouse-gas emissions, mostly in the form of nitrous oxide and methane. (Nitrous oxide is a by-product of fertilizer use; methane is released by rotting manure and burping cows.) Somehow, these emissions, too, will have to be eliminated.

All of this should be done—indeed, must be done. Officially, the U.S. is committed to reaching net zero by 2050. But a task of this scale has never been attempted before. Zeroing out emissions means rebuilding the U.S. economy from the bottom up. Perhaps Americans recognize this, perhaps not. In early July, at a time when much of the country was baking in ninety-five-degree-plus heat, the Times took a poll of registered voters. Asked to name the most important problem facing the nation, twenty per cent of the respondents said the economy, fifteen per cent said inflation, and eleven per cent said partisan divisions. Only one per cent said climate change. Among registered Republicans, the figure was zero per cent.

Climate Change from A-Z

Elizabeth Kolbert

The New Yorker, November 28, 2022