We explore the hidden role of cobalt in the A.I. revolution. The element is a key ingredient of lithium-ion batteries, which power everything from cell phones to laptops to electric vehicles. But the way cobalt is mined is troubling. New Yorker journalist Nicolas Niarchos takes us to the Democratic Republic of Congo, which accounts for more than 70% of the world's cobalt supply. There, he exposes child labor in the supply chain and reveals a new frontier of competition with China.

See omnystudio.com/listener for privacy information.

In this special bonus episode, Oz and Karah share their trip to the Consumer Electronics Show. They present excerpts from a conversation with Matt Monahan of The Washington Post about how to best harness the power of AI, while avoiding common pitfalls. Matt is head of product for Arc Publishing, which began life as The Post's internal publishing suite, and is now licensed by hundreds of partner sites. Oz and Karah also discuss their highlights from the CES floor, including a device to track dogs' emotions.

See omnystudio.com/listener for privacy information.

In this special episode, Oz and Karah examine our evolving relationship with the technology we create. Karah meets Jason Cohen, CEO of Analytical Flavor Systems, to see if his team can hack her taste preferences, and use AI to create a new flavor of beverage that she will love. Oz and Karah also look ahead to Season 2, previewing stories they are excited to report, including algorithms that promise to optimize end-of-life conversations. And they share highlights from conversations with guests from Season 1 who shaped their thinking about AI: Yuval Noah Harari, Siddhartha Mukherjee, and Regina Barzilay of MIT.

See omnystudio.com/listener for privacy information.

The rules are changing. At a time when technology promises to allow the lame to walk and the blind to see, we're forced to ask: what makes us uniquely human? In this final episode of Season 1, we speak with the so-called "sage of Silicon Valley," Yuval Noah Harari, about humanity's future. We try out technology that claims to deliver on a miracle, and we meet the source of several new innovations being created by people normally left out of the laboratory. In this episode: Professor Yuval Noah Harari, Sebastian Thrun of Google X and Kitty Hawk, Bryony Cole of Future of Sex, musician Noe Socha, and Dr. Andy Schwartz of the University of Pittsburgh. Special thanks to The Forward, and Make It All Work.

See omnystudio.com/listener for privacy information.

A.I. is already better than human doctors at diagnosing skin and breast cancer. And as machine learning advances, it's becoming able to decode more complex information, like brain waves and the human genome. A.I. is beginning to revolutionize medicine, and allowing us to see into the future of our bodies...but can we ever know too much about ourselves? What will happen when machine learning lets us open our own black boxes?

In this episode: Physician and author Dr. Siddhartha Mukherjee, Google X founder and Kittyhawk CEO Sebastian Thrun, Regina Barzilay of MIT's J-Clinic and CSAIL, Dr. Andy Schwartz of the University of Pittsburgh, Gill Pratt of the Toyota Research Institute.

See omnystudio.com/listener for privacy information.

War has been a driver of breakthrough technology for a long time. The first waves of artificial intelligence and even the internet came out of DARPA, a defense agency whose original mission was to keep the U.S. technologically ahead of the Soviet Union. But what happens when the battlefield is increasingly dominated by autonomous weapons, which don't require humans in the loop to shoot and kill? In this episode: Arati Prabhakar, former head of DARPA; Richard Danzig, former Navy Secretary; Paul Scharre, author of "Army of None"; and Jonathan Wilson, former Navy SEAL.

See omnystudio.com/listener for privacy information.

Robots are coming for our jobs, and not just in factories. Artificial intelligence doesn't distinguish between blue collar and white collar work, which means that the economy of the future will look very different. And as it changes, we'll need to make big adjustments. But A.I. is also being used in the fight against world hunger. This episode, we speak with roboticists, inventors, and a fast food regular about how we'll put food on the table.

In this episode: Ian Bremmer of Eurasia Group, Kai Fu Lee of Sinovation Ventures, Gill Pratt of the Toyota Research Institute, George Kantor of the Carnegie Mellon Robotics Institue, and Walter Kankowski.

See omnystudio.com/listener for privacy information.

We travel to Silicon Valley where Astro Teller welcomes us inside X, Google's secretive innovation laboratory, to explain how one of the most powerful companies on earth is building the future. X is working on everything from creating new antibiotics to restoring internet connectivity after natural disasters. And they're not alone. Tech companies are increasingly involved in building infrastructure, and even playing the role of government. But what kind of power does this give them? And what can we do to rein it in?

In this episode: Astro Teller of X, Lina Khan of Columbia Law School, Sal Candido & Pamela Desrochers of Loon, Jack Clark of OpenAI, and Jamie Susskind, author of "Future Politics".

See omnystudio.com/listener for privacy information.