Video games

In a suburban Melbourne industrial estate, hidden in a clutter of brutalist buildings and parked trucks, tomorrow’s world is taking shape. Here, an Australian tech start-up called Cortical Labs has caused an internet sensation. More than 40 million people have watched a clip of disembodied human brain cells playing the 1990s video game Doom. These cells are kept in petri dishes, wired up to computers and trained to do whatever the researchers want. “Right now, the cells play a lot like a beginner who’s never seen a computer,” says neuroscientist and Cortical Labs’s chief scientific officer, Brett Kagan. “But they can shoot, they can spin, they can seek out enemies