Severe heat waves and cold snaps are especially hard to forecast because atmospheric perturbations can have effects that are difficult to compute. Neural networks show promise where typical methods have stumbled.

YouTube is a great place to learn about new ideas — including some that have been thoroughly discredited. YouTube’s recommendation algorithm is helping spread misinformation about climate change, according to research by Avaaz, a self-funded activist group.

Solar-thermal power plants concentrate the sun’s energy using huge arrays of mirrors. AI is helping those arrays stay in focus.