http://www.youtube.com/watch?v=GDYYRfUAMF0
Panasonic decided to show off their LED technology during Tokyo’s Firefly festival last week by releasing over 100,000 LED pods on the Sumida river.  The lights are solar powered and were scooped out of the river at the end of the event, just in case you were wondering how they minimized the eco footprint.  The LEDs were to honor the fireflies as well as the Japanese tradition of floating candles on the river.