Stanford neuroscientist William B. Hurlbut talks about his dealings with the Chinese researcher who created the world’s first gene-edited babies, and about the implications of that experiment.

In the face of new technology allowing scientists to manipulate genes in human embryos, how will we move forward?

Neuroscientist Anders Sandberg talks about the challenges and risks inherent in our steady march toward an age where machine intelligence surpasses that of human beings.

Piers Millett of Oxford University’s Future of Humanity Institute talks about potential global biological catastrophes stemming from such risks as bioterrorism, pandemic disease and genetic manipulation.

Is there hope for a resolution of the Israeli-Palestinian impasse in what some have called “a dangerous neighborhood”?

Historian Lisa Vox argues for finding a way to address the threats that face us all. It starts, she says, with not condemning others for holding a different worldview.

Part Two: AI expert Seán Ó hÉigeartaigh answers questions about the rapidly developing technology behind artificial intelligence.

The chief engineer for NASA’s robotic Mars Exploration Program talks about what it would take to put people on the Red Planet. Will Mars be humanity’s lifeboat?

Part One: What can we look forward to in a world where artificial intelligence plays a bigger role? What should we be concerned about? An AI expert provides some answers.

From genes to geophysics, our world is increasingly what we make it. But environmental philosopher Christopher Preston urges restraint.