This waste-to-energy plant doubles as a ski slope

Copenhagen’s waste-to-energy power plant lets you ski on its roof, while it converts 400,000 tons of trash into electricity and heating. Designed by Bjarke Ingels Group, Copenhill hosts one of the world's largest artificial ski slopes. It will soon be welcoming guests to hit its slopes with or without snow, 365 days a year.  Read more...