"This is the story of John Muir's adventurous life, from his wild and playful boyhood in Scotland to his legendary exploits in America, where he became an inventor, a global explorer, and the first modern environmentalist -- and even made friends with a president! His heart was always in the outdoors and he aimed to experience all he could. He swung through a windstorm at the top of a tall tree, clilmbed too many mountains to count, and rode an avalanche...