Check out this art installation in England in which 400 balloons with LED lights inside them were released at night. The colors of the balloons are caused by messages sent by people around the world via the Internet:
as part of the london 2012 festival new york and amsterdam-based studio yesyesno adorned a 117km expanse along the hadrian’s wall world heritage site in england with hundreds of large-scale, pulsating light-filled balloons entitled ‘connecting lights’. the digital art installation consists of about four hundred 2 metre diameter weather balloons that transmit messages between each other – these sent in from people via an online platform. these messages are translated into LED lights that change color to create a vibrant row of blinking orbs, shown in several locations across the wall open to the public, including the errington arms in corbridge,
housesteads roman fort, carlisle castle and tullie house museum.