The secrets of the world's happiest cities

I love this article on the happiness of self-propelled transit:

But for a moment I forgot my questions. I let go of my handlebars and raised my arms in the air of the cooling breeze, and I remembered my own childhood of country roads, after-school wanderings, lazy rides and pure freedom. I felt fine. The city was mine. The journey began.

This passage captured my experience of driving in the city:

Driving in traffic is harrowing for both brain and body. The blood of people who drive in cities is a stew of stress hormones. The worse the traffic, the more your system is flooded with adrenaline and cortisol, the fight-or-flight juices that, in the short-term, get your heart pumping faster, dilate your air passages and help sharpen your alertness, but in the long-term can make you ill. Researchers for Hewlett-Packard convinced volunteers in England to wear electrode caps during their commutes and found that whether they were driving or taking the train, peak-hour travellers suffered worse stress than fighter pilots or riot police facing mobs of angry protesters.

But one group of commuters report enjoying themselves. These are people who travel under their own steam, like Robert Judge. They walk. They run. They ride bicycles.