What is Sustainability?

When I hear the word sustainability I think of keeping the environment from getting worse and making it better by doing simple things in our daily lives such as turning off lights, recycling, or just being more conscious of the world around us. I don't necessarily think about doing big things to change the world drastically at once, but little things that everyone can do if they put time and effort into caring about the environment. The first major problem of course that comes to mind when talking about sustainability is the problem of pollution and things that need to be done to stop it. People need to find a way to get around other than using their personal cars to take them everywhere. When it all comes down to it there really is no choice and before long people will have to do something to help the environment around them.