I'm taking an innovative course on using technology for humanitarian causes, taught by a professor I really like. But it's awful! How can I tell him what I think, and/or turn this disaster of a course into something worthwhile? [more inside]
posted by k. on Sep 23, 2009 - 29 answers

The seas are rising. Climate change has made it inevitable. I have a strange question... Assuming that world sea-level rises by 1 metre over the next hundred years - Would it be possible to cordon off a section of land, somewhere in the centre of a continent, and flood it to create an artificial ocean, thus reducing the consequences of the sea rise? [more inside]
posted by 0bvious on Sep 18, 2009 - 30 answers

What would you name a green project that saves electricity throughout a building? [more inside]
posted by Black_Umbrella on Feb 7, 2009 - 17 answers

Can you show me a photo beam sensor or a magnetic sensor that is close to the size of my pinky? [more inside]
posted by kaozity on Dec 3, 2007 - 8 answers

What readings would you recommend for a freshman composition class for Engineers? [more inside]
posted by washburn on Jan 6, 2007 - 13 answers