30 minutes exercise a day is a great way to keep fit, look good and keep your city clean. Whether you do it with your friends to and from college or by getting off the bus one stop early, walking is a great way to travel.
Travelling by bike is a fast and fun way to get around. Do it as a social activity with your mates, and with Manchester's network of cycle paths, it's a brilliant way to get fit and rediscover your area.
You can pick up route maps from libraries, tourist information centres and local town halls, and an interactive map will soon be online to help you plan from home.
Don't forget, running a bike is almost free once you've bought one. With Greater Manchester authorities working hard to make parking your bike in public places easier and safer, it could be your perfect contribution to a better world.
Cars - the real cost
It's nice to have your own car, but behind the image and independence are some serious costs.
To give yourself a clearer picture, have a look at the suggested links. They'll give you the hard facts on the cost of running a car and your impact on the environment.