The Sultan of Spatter

Dr. Donald Johnson has spent his career making crime scene blood stains spill their secrets. His next mission: bringing forensic science into the iPad age.

The Inventor

Endlessly tinkering away in his garage, Carl Sarno has dreamed up everything from spill-proof paint lids to hemorrhoid applicators and mine detonators. But for this ultimate old-school innovator, the thrill lies not in the outcome but in the inventing itself.

Kickstarting a Cure

Twenty-five million Americans struggle with rare, debilitating diseases. One pioneering doctor is crowdfunding their hope.

Silencing the Subway

Inside a high-tech effort to minimize the maddening racket in the New York underground.