This extensive resource offers well encoded video and audio recordings and podcasts of lectures held at the Royal Society on a broad range of scientific subjects including biology, climate science, chemistry, geology, mathematics, physics and history of science. The archive is very well catalogued and organised. Many lectures are also webcast live. Lecturers include such luminaries as David Attenborough, Bill Bryson, Ben Okri and Tim Berners-Lee. RealOne and Windows Media Player required.