We can help the world by using the 3 R`s.
Reuse your paper,
If you only used it on one side call it goos (good on one side) paper, keep a goos paper box in your house so you can have a quick piece of scrap paper when needed instead of throwing it directly in the recycle, and using more paper.
Also you can ...
-stop buying plastic
-kids don't need too many toys
-turn off the water while you brush your teeth
-and do not litter