Spike Carlsen built a tree house at the age of 8 and has been swinging a hammer ever since. He worked as a carpenter and contractor for 15 years, then as an editor with "The Family Handyman" the world s leading DIY magazine for another 15. He s the author of the award-winning "A Splintered History of Wood", "Woodworking FAQ", and "The Backyard Homestead of Building Projects". He s written for "Men s Health", the "Minneapolis Star Tribune", "American Woodworker", and other publications and has appeared on HGTV, "Modern Marvels", and CBS s "The Early Show". He and his wife, Kat, divide their tim...