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Jim Al-Khalili discusses earthquakes and fracking for gas with geologist Zoe Shipton.
Chris Llewellyn Smith on quarks, bosons and running the biggest experiments in history.
Botanist Sandy Knapp talks about her adventures collecting plants in South America.
Chris Lintott tells Jim Al Khalili about crowd sourced astronomy and Galaxy Zoo.
Janet Hemingway on malaria and the coming of insecticide resistance, with Jim Al-Khalili.
Jim Al-Khalili meets child psychiatrist Prof Sir Michael Rutter.
Jim Al-Khalili talks to Dame Julia Slingo, the chief scientist at the Met Office.
Jim Al-Khalili talks to Veronica van Heyningen about the gene that builds the eye.
Alf Adams remembers his small idea that changed the world, with Jim Al-Khalili.
Anne Glover talks to Jim Al-Khalili about glow-in-the-dark bacteria and advising ministers