Given an airtight room with bright enough lights to fuel photosynthesis, how many plants would it take to provide an average person, at rest, with sufficient oxygen (assuming it is possible at all). [more inside]
posted by lucasks on Jan 12, 2006 - 7 answers

If two people sleep overnight in the trunk of a brand new sedan, could they suffocate? [more inside]
posted by crabintheocean on Sep 5, 2005 - 13 answers