"You do not want a system prone to bias going around with the capacity to kill people," says Nir Eisikovits of UMass Boston's Center for Applied Ethics.

Whether you’re on social media or surfing the web, you’re probably sharing more personal data than you realize. That can pose a risk to your privacy – even your safety. At the same time, big datasets could lead to huge advances in fields like medicine. In NOVA's Secrets in Your Data, host Alok Patel explores these issues on 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.

Join NOVA at GBH for a screening of selected clips from Secrets in Your Data paired with a panel discussion featuring experts from the film. Following the program, we will host a catered reception in the Atrium.

NOVA's Secrets in Your Data premieres Wednesday, May 15, at 9/8c on PBS. Check local listings for details. It will also be available for streaming online and via the PBS video app.

Our panel for the evening will include:
Alok Patel — Moderator, Host of Secrets in Your Data, Physician, ABC News Medical Contributor
Matt Mitchell — Founder of Crypto Harlem, Hacker
Ramesh Raskar — Associate Professor at MIT Media Lab, Founder of the PathCheck Foundation
Hayley Tsukayama — Associate Director of Legislative Activism, Electronic Frontier Foundation

For total solar eclipses, everything that had to go just right for us here on Earth to enjoy the view.

"The cosmos is a constant reminder that nature is as magical as we once believed as kids," says astrophysicist Grant Tremblay.

In the town of St. Johnsbury, Vermont, everyone’s got their head in the clouds, as preparations for a tourism boom during the April 8 total solar eclipse have been underway.

The sixth mass extinction currently underway is due to a combination of climate change and destruction of natural habitats. Both crises are the result of our energy, industrial, and food production systems that have upended Nature. Biologist Michael Reed explains how the vitality of our planet depends on the health of ecosystems. Using migratory birds as an example, he describes the interdependence of different forms of life --- birds, animals, fish, insects, plants --and terrain. Dr. Reed also suggests why some species are better able to adapt to the climate and extinction crises than others. Worldwide action is urgently needed.

There is much interest today in the purpose of play. For humans, it is widely considered important for development, but for animals the role of play is less certain. In this fascinating description of the imaginative and varied play habits of many species of animals, David Toomey considers the purpose of this behavior, and he explains the major views on the subject.

"I saw it not only as a way to help me, but a way to provide hope for the thousands of people who need a transplant to survive,” said Richard Slayman.

Smithsonian Astrophysicist and Harvard Lecturer Matthew Holman discusses the search for undiscovered planets at the edge of the solar system.

Cement is the second most-consumed resource in the world—second only to water.