The world's supply of fossil fuels has been dwindling for a long time. It's been easy to pretend this wasn't happening because there seemed to be an endless quantity of oil and gas reserves. How could we ever run out? All we had to do was drill another well or lay down another pipeline. But now it seems

Marathon running is a sport that began in 1896 at the first modern Olympics held in Athens, Greece. Today, marathon road racing is big business. The Boston Marathon attracts about 20,000 participants. The New York City Marathon is twice as large, with more than 40,000 runners. Successful marathoners