Our weekly news round-up: Meteorites found on Earth hint at complex organic precursors in the asteroid belt; All systems go for historic Falcon Heavy; Transparent, stetchable nanostructures used to make a smart contact lens; Aussie Jackson Palmer, creator of Dogecoin, reveals his crypto currency was supposed to be a joke; Automated cashiers disrupt bricks and mortar retailers; Facebook loses a million users in North America; New Australian data breach notification laws take effect on February 22.