Harvard professor and 2017 Breakthrough prize winner in Fundamental Physics, Cumrun Vafa joins Brian Greene for a discussion on the past and future of string theory and how puzzles ignited …

World Science Festival co-founder Brian Greene and seven-time Emmy Award–winner Alan Alda muse on Einstein’s Theory of Relativity in a post-performance discussion after a reading of Alda’s play “Dear Albert.”

Humans work together on enormous scales to build complex tools as large as cities and create social networks that span the globe. What is the key to our success? This …

From a bee’s hexagonal honeycomb to the elliptical paths of planets, symmetry has long been recognized as a vital quality of nature. Today’s theorists are pursuing an even more exotic symmetry that, mathematically speaking, could be nature’s final fundamental symmetry: supersymmetry.

Microbiologist Hazel Barton goes spelunking in sticky mud, camping underground, and rope climbing in a atrium—all to research cures for antibiotic-resistant diseases. Episode filmed live at the 2009 World Science …

For all we understand about the universe, 96% of what’s out there still has scientists in the dark. Astronomical observations have established that familiar matter—atoms—accounts for only 4% of the weight of the cosmos. The rest—dark matter and dark energy—is invisible to our telescopes.