Aye, true that. Well, cover it in mylar, and it was rads I was thinking of predominantly. You could potentially make something like http://en.wikipedia.org/wiki

Aye, true that. Well, cover it in mylar, and it was rads I was thinking of predominantly. You could potentially make something like http://en.wikipedia.org/wiki/Pykrete http://en.wikipedia.org/wiki/Pykrete using martian topsoil.