A Green World

How can we contribute to a greener world? Plant a tree? May be we don't have such a big yard at our home. May be we don't have a piece of land. May be we don't have time to take care of the plant.

So we just use less one piece of tissue in a day. Then we will have more trees on the planet!
Does this sound too extreme or over do? Some may say due to the economy of scale, we need a reasonable amount of waste to drive the recycling business, and keep the paper industry to continue using recycled paper. I think this is only true in one side. In order to recycle paper, we do need to use a lot of chemical and water, and contribute to other form of environmental polution.

Resources in the world is limited, the best way is to preserve the resources rather than consuming it in a large scale.