There was a piece on the ABC website today, concerning the viability of living on Mars, a concept debunked by Bill Nye with some serious observations on the absurdity of some of the spuikers "blue sky" dreams. Terraforming is a good example. Musk wants to go, which I am supporting, but I suspect it's a way to sell one way tickets.
https://www.abc.net.au/news/2018-11-...years/10553914