Ecological Footprint Activity

From the ecological footprint activity, I learned that an ecological footprint is how many resources humans use compared to how fast ecosystems can replenish those resources. For instance, currently humans ecological footprint is 1.5 global hectares, so we use 1 1/2 earths. Obviously we don't have 1 1/2 earths, so we are living unsustainably and using resources faster than the world can supply them for us. I learned that I use about 4 earths in my average lifestyle, when I thought I used a lot less and lived more sustainably.