Hydrogen-powered cars aren’t taking off, but the gas is finding uses in larger municipal vehicles. In one Swiss city, a new street sweeper is now silent and emissions-free.

Hydrogen-powered cars aren’t taking off, but the gas is finding uses in larger municipal vehicles. In one Swiss city, a new street sweeper is now silent and emissions-free.

There are two things Switzerland does better than anyone else: minimalism and milk chocolate. The slick, glassy office building you see here is proof positive of the former in the town that gave the world the latter.

Why did North Korea put clouds on its building? And what is America just dying to tell China ... via its pavilion?