We are facing grave environmental threats.  I believe that the most serious of these threats is global warming.  The conditions necessary to maintain life on this earth are very delicate.  We could easily get to the point of no-return without realizing it.  Please visit the following sites for further information:

All You Ever Wanted to Know About Global Warming
A Paleo Perspective on Global Warming
The International Center for Technology Assessment Most of the global warming is caused by the combustion of petroleum products and other organic materials.  One of the biggest causes of pollution is the car.  Often, we drive short distances when walking would be nearly as easy.  We travel to work in an office when we could just as easily work at home via a computer network.  We make our lives unnecessarily complicated. The average American adult receives almost 560 pieces of junk mail each year.  One hundred million trees are ground up every year to produce the 4.5 million tons of solicitations that clutter our mailboxes. We keep ourselves busy as a way of distracting ourselves from our mental incongruities.  All of the pages of this site tie together.  When we carry excess baggage with us - in the form of mental clutter, physical belongings, and over-activity - we restrict our freedom.  We unnecessarily complicate things, waste time, and have a negative impact on the environment. A person who has become enlightened through meditation will become especially sensitive to waste and inefficiency.  There are many compelling reasons for change.