Mars needs women

[Just Jack]

http://www.slate.com/articles/health_and_science/space_20/2014/10/manned_mission_to_mars_female_astronauts_are_cheaper_to_launch_into_outer.single.html

[Saxum]

So what we need is the Munchkins from Oz to be our astronauts. If women save 50% as author claims then Munchkins would save 66% or more.