3D print a concrete house within 24 hours
Read an article
http://www.dailymail.co.uk/sciencetech/article-2539857/How-3D-printing-help-colonise-moon-Contour-Crafting-technique-build-lunar-bases-astronauts-just-24-hours.html
(fr) En francais dans le texte http://www.huffingtonpost.fr/2014/01/17/imprimante-3d-qui-contruit-une-maison_n_4616627.html?utm_hp_ref=france