How can you make the world you live in a cleaner and greener place to live?

First of all, you recycle everything you can: newspapers, bottles, jars, containers, etc., recyclables in general. Then you start a compost pile in your backyard for stuff like fruit peels and potato peels and non-stinky leftovers. Then you turn off a lot of your lights when you don't need them, and stop the faucet when you brush your teeth, take as short a shower as possible, stuff like that.