As founder of the Alliance Against Urban 4x4s, Sian has been instrumental in influencing London's congestion charge and its punitive rates for unnecessarily large cars. The tide is turning and sales of 4x4s are falling while bike purchases have risen (to 4.5 million in the UK in 2004). But Sian is not asking you to give up cars and never to go on holiday abroad again, but will show you instead how to reduce your carbon footprint in small but effective ways. Similarly, we are now saying no to carrier bags and asking questions about the antecedents of the cheap clothes we buy. Sian will look at the choices we can make, not just in consumables, but also in our food purchases, gifts to friends and family, in restaurants, and beauty services. Change the world without changing your life.