NOVA S51E15 - Secrets in Your Data

 Whether on social media or surfing the web, you probably share more personal data than you realize. That can pose a risk to your privacy – even your safety. But at the same time, big datasets could lead to huge advances in fields like medicine. Host Alok Patel leads a quest to understand what happens to all the data we're shedding and explores the latest efforts to maximize benefits – without compromising personal privacy.