A self-driving car has a split second to decide whether to turn into oncoming traffic or hit a child who has lost control of her bicycle. An autonomous drone needs to decide whether to risk the lives of busload of civilians or lose a long-sought terrorist. How does a machine make an ethical decision?

Medical ecologist Dickson Despommier describes the Vertical Farm Project, a movement to promote urban renewal while producing a sustainable food supply. The project is a result of his years studying …

How fast is the universe expanding? Two prominent approaches are finding different answers, propelling cosmology toward a crisis. Wendy Freedman, a renowned astronomer who has spent decades seeking the expansion …

Sexuality and gender play a profound role in shaping identity, but for much of human history how they are determined has remained obscure. How does sexual orientation develop? What is it? Can it be changed?

Geckos performing death-defying wall-climbing feats inspired materials scientist and engineer Michael Bartlett to invent adhesive that’s sticky powers are just as strong as this reptile. His Cool Jobs is developing …

Sean Carroll, best-selling author and professor of physics and philosophy, joins Brian Greene for a wide-ranging conversation spanning the quantum to the cosmos–teeing up their live event in NYC on …