a maryland 9th grader who just won $100,000 in the intel science prize. his invention, a little piece of paper, a test that detects the very beginnings of cancer. 168 times faster and 400 times more sensitive than current tests and it costs just 3 cents. >> it could detect the cancer before it becomes invasive. >> catch them early? >> that's what's so cool about the test. >> reporter: jack is an average teenager in a lot of ways. he loved science since he was 3. when his family lost a family friend to pancreatic cancer, it made him think of tiny carbon molecules. carbon nano-particles? >> nanotubes. >> did you learn about them in school? >> no, i read journal article for fun. that's my cup of tea. >> reporter: this doctor at