Hm, I haven't had to introduce myself to anyone in a long time!
I've been advocating for transit and walkability since college. Many of our problems (pollution, resource depletion, violent injury and death, inequality) come from cars. But I realized a while ago that improving transit and walking are not enough by themselves: we also need to reallocate our public money, infrastructure and space away from cars & trucks.
I've spent a lot of time on Twitter. I blog here: