This isn't exactly new, but it's about the ability to use your browser to tune into someone else's radio receiver anywhere in the world and hear what they can get as if you were living in that city. 

"What I hear actually depends on that receiver’s antenna, its location, nearby electromagnetic interference, the time of day, and radio propagation conditions at the time. And that’s what makes it so much more exciting and useful, because I’m not just listening to “radio from Germany.” I’m using a receiver in Germany and hearing what that receiver can pick up right now."

I turned my browser into a worldwide radio scanner, and I wasn’t ready for what I heard