Bill Gates recently told Wired that if he were a teenager today, he would be hacking biology. If you want to change the world in some big way, he says, that's where you should start-biological molecules. The most disruptive force on the planet resides in DNA. Biotech companies and academic researchers are just beginning to unlock the potential of piecing together life from scratch. Champions of synthetic biology believe that turning genetic code into Lego-like blocks to build never-before-seen organisms could solve the thorniest challenges in medicine, energy, and environmental protection. But as the hackers who cracked open the potential of the personal computer and the Internet proved, the most revolutionary discoveries often emerge from out-of-the-way places, forged by brilliant outsiders with few resources besides boundless energy and great ideas. In Biopunk, Marcus Wohlsen chronicles a growing community of DIY scientists working outside the walls of corporations and universities