and finally, we end on more cat robot advancements this week — as mit showed how its cheetah robot can negotiate uneven terrain with gaps and obstacles. the new system called tmic — or trajectory modulation via impulse control — doesn't require pre—mapping of terrain, allowing the robot to travel anywhere. welcome back to the world expo 2020 in dubai. off to italy now, where we posed the question, if michelangelo had had a 3d printer, would he have bothered with all that sculpting? this is an exact replica of his david, which has been scanned in incredible detail — to within one hundredth of a millimetre. the process took a0 hours, and the result was a 3d file that was then sent off to a massive 3d printer.