At 13 Trevor Schaefer was diagnosed with brain cancer and the world as he knew it changed overnight. Not only did Trevor end up beating the cancer -- he found a calling. Now 22, Schaefer is an inspiring advocate for children with cancer, and the driving force behind "Trevor's Law." This bill now pending in Congress would increase government authority to determine if environmental toxins are responsible for causing cancer in children living in particular regions. Read more about Trevor's journey in his own words.