What do we need to know for our first model rocket launch? [more inside]
posted by Doofus Magoo on Sep 17, 2009 - 17 answers

I want to see a building implosion. How do I make this happen? [more inside]
posted by justkevin on Jan 2, 2009 - 7 answers

Given our current state of technology and the world's nuclear armaments, I ask the question that the world needs an answer to: Could we destroy Mars? [more inside]
posted by TwelveTwo on Dec 24, 2005 - 41 answers