People now a days think that you need to have a sustainable greenhouse that produces all your food, that you can never use water, and never use a car to get to places to help the environment.  Although this helps quite a bit and is good for the environment, not everybody can do this, and there are many other ways we humans can help the earth.  Even little things like turning off lights when leaving rooms, recycling, saving water from showers by putting a bucket in the shower while the water warms up, and carpooling or riding a bike or walking helps out the environment greatly.  And if everyone did just one of these easy ways to help the environment, just imagine how much better our earth could be.