We often take for granted the earth's natural resources that are so vital to our existence and survival. We don't take our own water; we do not preserve our heat; we don't conduct our own electricity. All these resources are delivered to our homes with the same tranquility and ease with which we go out for air. But as silently as they arrive, they can be just as silently consumed without knowing how much. Every single day the way we live affects the earth's ecological system. Therefore, it is very important to keep track of how many resources we consume. The ecological footprint is a useful way of knowing how much our lifestyle affects the Earth's ecological system: a methodology used to measure the level of our consumption of natural resources and the impact that consumption has on the planet. Our lifestyle: how often and how much we drive; how often and how much we buy new products; how much or not we recycle – can directly influence and put pressure on the planet. The personal ecological footprint helps the individual put into perspective how their lifestyle directly affects the environment...