
As children, we're all taught to turn off the lights behind us as we leave an empty room. But it seems Norwegians have taken that lesson one step further. Along a 5.5-mile stretch of road in Hole, Norway, smart streetlights automatically dim when nobody's around—then come back to full power when a car, pedestrian, or other object approaches...
This week, we feature ink made from algae, an electric Porche, a glowing bandaid and a virtual reality system that gives you the feeling of flight.