This free online resources specialises in the sciences and medical humanities and produces a range of podcasts aimed at both a general and specialised audience. The site hosts the following weekly podcasts: Math/Maths - a weekly conversation between a British and an American mathematician - Strange Quarks, which looks at science and politics as well as the stranger fringes of pseudoscience, and the Pulse Project, which is a round-up of the latest science news. Elsewhere on the site there are Videos and Lectures and the online audio encyclopedia Expert Explanations, which is aimed at undergraduates and gives four to eight minute introductions to key terms and theories in the medical humanities and sciences.