Korean developers of a bipedal robot allege it to be capable of outrunning the world’s 100-meter sprint record-toter. The minds behind Raptor, as the automaton has been christened, at the Korean Advanced Institute of Science and Technology (KAIST) say it outperforms Usain Bolt by some two seconds. Bolt’s intact record stands at 9.58 seconds. The machine has been fitted with a tail, which restores...