Garik Israelian: How spectroscopy could reveal alien life. David Deutsch: A new way to explain explanation. Marcus du Sautoy: Symmetry, reality's riddle. Richard Dawkins on our "queer" universe. Benoit Mandelbrot: Fractals and the art of roughness. Margaret Wertheim on the beautiful math of coral. Tom Wujec demos the 13th-century astrolabe. Philip Zimbardo prescribes a healthy take on time. Zach Kaplan and Keith Schacht demo toys from the future. Patricia Burchat sheds light on dark matter. Carter Emmart demos a 3D atlas of the universe.
Nick Sears demos the Orb. Andrea Ghez: The hunt for a supermassive black hole. Garrett Lisi on his theory of everything.