Dark Matter and Dark Energy make up most of the known universe, but why do we understand so little about what these concepts actually are and what they do?

Melvyn Bragg and guests discuss the physics of Gravitational Waves. Guests include Carolin Crawford, Jim Al-Khalili and Sheila Rowan. May 17, 2007

Melvyn Bragg discusses the mathematical and cultural mysteries of the Fibonacci Sequence. With Marcus du Sautoy, Jackie Stedall and Ron Knott. Nov 29, 2007

Melvyn Bragg grapples with the concept of imaginary numbers. Perplexing digits that underpin the majority of technology we take for granted today, from radios to computers to MRI scans; not to mention quantum mechanics. Melvyn is joined by Marcus du Sautoy, Professor of Mathematics at Oxford Univers...

Melvyn Bragg and guests explore the unintended consequences of mathematical discoveries. With Marcus du Sautoy, Colva Roney-Dougal and John Barrow. Feb 11, 2010

Melvyn Bragg and guests discuss the measurement problem in physics. With Basil Hiley, Simon Saunders and Roger Penrose. Mar 05, 2009