Steve Green, a former NASCAR driver and a self-proclaimed innovator and problem-solver, has the solution to all of America's energy problems: Just tap into the geothermal power of Yellowstone National Park, and damn the consequences.

Luxury train service to Yellowstone National Park and other Western landmarks was spiked before it launched, as billionaire Philip Anschutz pulled the plug on the American Railway Explorer project, set to launch in 2011.

The numbers are in: the number of people who visited Yellowstone National Park in the month of July came close to equaling the number of people who came during the first six months of the year combined.

Thinking about an upcoming visit to Yellowstone National Park? Consider going on the weekend of Aug. 14-15, when the National Park Service is waiving admission fees to America's Oldest National Park.