When I bought a bicycle to commute to work a few months ago, I didn't realise that I would be joining a band of eco-warriors who risk their lives, limbs and dignity on the streets of Delhi every day. They are a varied bunch, including graphic designer Ranmal Jhala, who has been cycling for more than four decades; architect Gaurav Shorey who figured out a dozen years ago that cycling to college would save him 20 minutes; and Simon and Kate Bishop, British environmentalists who came to Delhi to work with The Energy and Resources Institute late last year, and put their principles into practice by buying bicycles to go to office. Enthusiastic cyclists all, nothing comes in the way of their riding pleasure except the attitude of a city that seems to love to terrorise and humiliate cyclists. If you are a cyclist in Delhi, the first lesson you learn is that you are responsible for your own safety. Bicyclists are so beneath motorists' notice in this city that they are nearly invisible