US teacher tracks his bike rides by GPS - and creates some stunning artwork (+ gallery)

Jellyfish Invasion (copyright
A man in Baltimore, Maryland, is using pedal power to turn maps of the city into art, tracing pictures of his journeys round the city by using his GPS-enabled phone. Michael Wallace’s works have now been featured in newspapers, websites and other media around the world, and here he shares with how he got started, the idea of launching a website to showcase his work, and his plans for his biggest piece yet.