Casey is a longtime friend. One day a few months ago he mentioned in a call he was choosing to lower his carbon footprint to a few tons of CO2 per year. I hadn't been trying to lead or persuade him, so I started asking him why, what prompted him, was it hard in Los Angeles where people drive everywhere and some people say they need air conditioning, and so on.

Knowing me and my actions prompted him, but there was more to it. He faced challenges from his family and profession, but found parts easy too. He started biking to jazz gigs by electric bike. What jazz musician bikes to perform?!? . . . with his equipment in a bike trailer?!?

I had to bring him here. If a jazz musician in Los Angeles can bike to work and enjoy it, a lot more people can than admit it. I think of jazz musicians as where cool originated. I see Casey raising sustainability's coolness for everyone.

• Casey's home page (he's done more than play jazz)

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