In celebration of John Muir’s birthday (April 21, 1868), the Sierra Club – which Muir founded in 1892 – has put together a Google Earth file allowing you to see some of the key places in his life. John Muir was a legendary naturalist, explorer, writer, and inventor. If he was born a century later, I’m sure he would have been a big fan of Google Earth. You can read about the file at the Sierra Club. Included are not only placemarks of key places in his life, but also a travelogue of part of a journey he made as a young man called the ‘Thousand-Mile Walk to the Gulf’. Hopefully the Sierra Club will include the entire journey someday.