What the Zoo and others want to get across to us is that we must save things now so we can use them in the future. If we suck up all our gas now, how will we be able to get to work in the future. True electric cars and other sources of power are being proposed, but until we can use those things, we need to use what we have. So the next time you go to school, instead of driving there yourself, try to carpool with a friend and split the cost of gas. Or ride your bike.
Recycling is also very important.
If there was no recycling, many animals would be dead because of suffocation from plastic bags and our landfills would be overflowing with newspapers and glass even more than they are today. Recycling is essential for the environment and all the little creatures that live in it.