Joseph R. Biden Jr.’s $2 trillion plan to fight global warming is the most ambitious climate policy proposed by a leading presidential candidate, a political lightning rod spotlighted on Thursday night when the Democratic nominee acknowledged during a debate that it would “transition” the country “from the oil industry.” But no one knows better than Mr. Biden, the former vice president, that it almost surely will not be enacted, even if his party secures the White House and the Senate. Thirty-six years in the Senate and the searing experience of watching the Obama administration’s less ambitious climate plan die a decade ago have taught him the art of the possible. Still, a President Biden could have real impact: solar panels and wind turbines spread across the country’s mountains and prairies, electric charging stations nearly as ubiquitous as gas stations and […]