The Sky Ear

On May 4th, the National Maritime Museum in London is hosting some weird art project called Sky Ear where they're going to raise a thousand helium balloons embedded with cellphones. The idea (at least as much of an idea as we could find) is that the balloons have  sensors that will cause LEDs on the balloons to change color depending on the changes in the electromagnetic field surrounding the balloons. You're then supposed to call into the cloud of balloons to listen in, at the same time changing the electromagnetic field inside the cloud and affecting the colors of the balloons' LEDs. Guess this will be one of those things you just have to see to appreciate.

[Via MetaFilter]