These Norwegian street lights only turn on when cars approach
A bright idea. Learn more: https://t.co/gaKVvZvdvU pic.twitter.com/lhvNJcWqBJ
— World Economic Forum (@wef) February 15, 2018
A bright idea. Learn more: https://t.co/gaKVvZvdvU pic.twitter.com/lhvNJcWqBJ
— World Economic Forum (@wef) February 15, 2018