It was too dangerous a mission for a human. Eleven years after the 1986 Chernobyl disaster an American consortium led by Carnegie Mellon Robotics came together to work out what to do. A concrete sarcophagus that had been built around the reactor to try and contain the world’s worst nuclear accident. This shelter was now deteriorating threatening to spread even more poison into the environment. A team of brilliant scientists and engineers came together to build a robot that could crawl on tracks like a bulldozer to inspect how bad things were and help assess what could be done to…