Donald Trump, at 79, seems more active than Joe Biden ever was as president. He has greater strength as a communicator and—as our Lexington columnist explained this week—unmatched ruthlessness, or shamelessness, in applying power. Still, Mr Trump is making the same sorts of mistakes as his predecessor. In some ways, he is turning into Mr Biden. Read why.

Speaking of energy, geothermal’s time has (finally) come. Researchers reckon that technical innovations could, by 2050, help it to produce nearly triple the current output of America’s nuclear power plants. You say you want a revolution? Well, here’s one.