JACK ANDRAKA is a Maryland high school sophomore who at age 15 invented an inexpensive and sensitive dipstick-like sensor for the rapid and early detection of pancreatic, ovarian and lung cancers. After a close family friend died of pancreatic cancer, Jack (then a ninth grader) became interested in finding a better early-detection diagnostic test. He learned that the lack of a rapid, low-cost early screening method contributed to the poor survival rate among individuals with pancreatic cancer.