What is the most important scientific question of our time? [more inside]
posted by Demogorgon on Oct 12, 2009 - 44 answers

How has our understanding of Astronomy, Biology, Chemistry, etc. changed in the last five years? [more inside]
posted by Orange Pamplemousse on Mar 24, 2008 - 15 answers

"A human is halfway in size between an atom and the known universe"... This is a paraphrased quote I have come across several times. I like it. Who said it first? How true is it in the most literal sense? And, finally, what errors arrive in postulating a universe, or an atom, which can be measured AT ALL from our singular, relativistic, perspective? [more inside]
posted by 0bvious on Feb 18, 2007 - 14 answers

Is there a limit to scientific advancement? If there is only a certain number of elements to the universe, will there reach a technology plateau? [more inside]
posted by the fire you left me on Jul 17, 2004 - 24 answers