There is literally concrete evidence of their work." Tony Hawk says skateboarding was once a sport on the edge of society.

VOA: special.2009.09.11

And he says skateboarding is giving young people some healthy competition in the inner cities of the United States.

VOA: special.2009.09.11

And,skateboarding,I think, is much more available to them and a lot of kids really enjoy that it's different."

VOA: special.2009.09.11

The sport combines the skills of surfing, skateboarding and skiing.

VOA: special.2010.02.10

I looked and I said,hey, that's skateboarding on snow. That's perfect for me." And he's still at it 27 years later in a career that has included not only injuries like a broken collar bone, broken ankles and torn knee ligaments, but also a liver transplant.

VOA: standard.2010.02.26