The fact that automobiles pollute only becomes a problem of sufficient magnitude to attract public attention when the far worse problems that the internal combustion engine solves vanished from view. People stricken with poverty don’t care about carbon dioxide. It’s not precisely that CO2 levels are irrelevant. It’s that they’re irrelevant when you’re working yourself to death, starving, scraping a bare living from the stony, unyielding, thorn-and-thistle-infested ground. It’s that they’re irrelevant until after the tractor is invented and hundreds of millions stop starving.
