You probably have seen the phrase, "Save the Planet." My advice? Don't worry about saving planet Earth.

Our planet has lasted more than four billion years and survived far greater calamities than anything we can do. We cannot destroy planet Earth. Fortunately, we cannot even destroy life on our planet.

Does that mean we don't have to worry how our actions can affect the environment? I don't think so. Even though we cannot destroy life on Earth, we can cause global changes that would be very harmful to many of Earth's current inhabitants, including ourselves.