Nuclear Power Is Hard. A Climate-Minded Billionaire Wants to Make It Easier.

Outside a small coal town in southwest Wyoming, a multibillion-dollar effort to build the first in a new generation of American nuclear power plants is underway.Workers began construction on Tuesday on a novel type of nuclear reactor meant to be smaller and cheaper than the hulking reactors of old and designed to produce electricity without the carbon dioxide that is rapidly heating the planet.The reactor being…