BBC Pop Up: Tacoma skateboarding school mixes hip and history
BBC Pop Up spent all of February in the city of Tacoma, Washington, in the Pacific Northwest of the US.
Skateboarding is a big deal on the streets here these days - but only a few years ago it was banned by the authorities.
Matt Danzico, a keen skater himself, went along to a youth group called Alchemy Skateboarding. There, they teach kids about the history of the sport as well as how to do all the tricks.