Think about how you travel. Could you walk or take a bus or train, rather than going in the car? And when you go on holiday, think about staying more locally, and try to cut down on air travel. Every passenger on a long haul return flight puts over a tonne of carbon dioxide into the atmosphere through burning jet fuel. For example, a return flight from London to Los Angeles produces 1.64 tonnes of CO2 per passenger, whilst a return from London to Perth produces 3.15 tonnes per passenger. That's almost half of the annual CO2 emissions of an average UK citizen!Read More: What more can I do?