Artists have transformed Hamburg's HafenCity University underground train stop into much more than a transport hub – as lights shaped like shipping containers now bathe the station in award-winning technicolour.
The same diode light that powered the wrist-calculator in 1980s classrooms is growing into something much more formidable. A Berlin research team is using the technology to stream HD video across a room. <b> Michael Dumiak</b> paid a visit.
