What material has no no carbon footprint and the potential to provide cheap wheels in poor countries? Bamboo, of course. Read more about the new spin on the world's fastest-growing renewable resource.

The action is in Cary this afternoon and evening as BMX riders take to the Sk8-Carys' 12,000-square-foot street course. 

Riders have the skateboarding and biking park to themselves for the BMX Day event, which lasts 3-10p.m. today. It will be a great opportunity for would-be BMX riders to observe and learn.