A portable, collapsible greenhouse inspired in part by a crop-producing system at a South Pole research station could someday provide fresh vegetables and other foods in future manned lunar or Martian outposts. Working in conjunction with private industry, the University of Arizona’s Controlled Environment Agriculture Center (CEAC) has set up a demo lunar greenhouse to demonstrate how a hydroponic system could grow peanuts, potatoes, tomatoes and other crops for colonists on other planets.
We are happy to announce the winner of our Go Green contest, thrown over on Instructables with the help from our friends at TreeHugger. The winning project details an ingenious way of further purifying the effluent water output of a sewage treatment tank (also designed by the contest winner's organization) and using it to grow plants in a hydroponic garden. Well done! Stay tuned here for more of our favorite entires, published in their step-by-step glory. Congratulations and thanks to all who entered! —John Mahoney
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.