I'm "saving the world"

  You wonder how? By SAVING THE PAPER !! 
Here are some photographs so you can understand what I mean :

After using just one side of paper, I am saving it for the next time. 
The sheets from the first image I used when preparing for my first 2 exams ... and then in the image below, are the same sheets of paper but turned upside down.

My boyfriend never use this "technique", and all the sheets of paper he used like for different projects,  essays etc. gives them to me so I can reuse them! 

And I am happy.. so I can save A SMALL a very SMALL part of a tree ! :P

"There must be a reason why some people can afford to live well.
They must have worked for it. I only feel angry when I see waste.
When I see people throwing away things we could use."
Mother Teresa