Is there a device that can automatically observe your stress levels in real-time? [more inside]
posted by philosophistry on Oct 16, 2009 - 9 answers

I lost my wedding ring playing soccer today. Help me maximize my chance of getting it back with a metal detector, or provide another better idea. [more inside]
posted by Kwine on Aug 11, 2009 - 19 answers

Would a invisible man set off a motion detector? [more inside]
posted by pokeedog on Nov 23, 2008 - 11 answers

I'd like to listen to the bats in my local park. What kind of detector should I get? [more inside]
posted by roofus on Aug 1, 2007 - 4 answers

The mountain ate my wedding ring, help me find it! [more inside]
posted by escher on Mar 13, 2007 - 15 answers

Can a US airline passenger take a metal detector along on an airline flight? [m/i] [more inside]
posted by pax digita on Apr 13, 2006 - 13 answers

I went through airport security today, and had to go through a large apparatus that blew bursts of air at me from about 30 little air jets. What was that? What does it do? What were they looking for? [more inside]
posted by Sreiny on Feb 5, 2006 - 25 answers