DeepMind, the people who gave us world-beating programs for chess, go, and Asteroids, have created an artificial intelligence system called AlphaFold that predicts the folding of proteins in a few hours. It's a very hard scientific problem that has lately been taking months or even years of laboratory work for each protein studied.
DeepMind trained the program by feeding it the data on known proteins and letting it generalize, then entered it in the Critical Assessment of Protein Structure Prediction, a sort of contest established back in 1994 to track efforts to solve the problem. AlphaFold's score at CASP was actually higher than traditional laboratory methods.
This is a very cool scientific advance, but it does raise the question of what scientists will do when all the hard problems can be solved by AI faster than people can do it.