Watch (and listen) as a Swedish mathematician skates on thin ice, creating a beautiful acoustic experience http://on.natgeo.com/2CFvFOG pic.twitter.com/rzkJ0aDM8Z

Watch (and listen) as a Swedish mathematician skates on thin ice, creating a beautiful acoustic experience http://on.natgeo.com/2CFvFOG  pic.twitter.com/rzkJ0aDM8Z

https://twitter.com/NatGeoTravel/status/967063669283713024