Musk wants to go to the moon. But how will he build his ‘self-growing city’?

It goes without saying that we shouldn’t take everything Elon Musk says too seriously. There are whole websites dedicated to those times when he has ‘talked the talk’ but failed to ‘walk the walk’ — as well as those times when he has been factually untrue. But his latest claim, which is that he will build a “self-growing city” on the moon by 2030, is worth considering because whether he or someone else is the one to make that happen, we can be cautiously optimistic that it is a question of “when” and not “if.”