In our third and final round up of the 2015 Transmission Prize, Zoe Cormier reveals the hedonism behind science and Sir David Spiegelhalter helps understand the risks we take on a daily basis.

In the second episode of our 2015 Transmission Prize round-up, Charles Ferneyhough describes the fragility of memory, Margaret on collaboration over competition and Jamie Bartlett on the mysteries of the Dark Net.

Our first podcast introducing the shortlisted speakers for the 2015 Transmission Prize. Here Lucinda Hawkesley plots the rise of the Suffragettes and Julian Baggini considers the stuff we put in our mouths.

In the final episode of our special preview of the 2014 Transmission Prize, Tim Spector talks epigenetics and Aarathi Prasad redesigns the rules of sex.

Episode 2 of our special preview of the 2014 Transmission Prize, John McHugo gives us a concise history of the Arab world, Sarah McCartney on the smell of sex and Barbara Sahakian on smart drugs.

A special preview for the 2014 Transmission Prize, Olivia Laing on why writers drink, Professor David Nutt on the truth about drugs and Lloyd Bradley leads us through 100 years of black music in the capital.

For day 2 at Festival No 6, Salon London explored our vocal and artistic identities and our place in the universe with Juilet Russell, Art Macabre and Tavid Tong.

Salon London explores identity; personal, sexual and dance music's with Philippa Perry, Grace Dugdale and Greg Wilson for Festival No 6. You are not a number . . .

Professor David Nutt, voted by The Times as one of the hundred most important figures in British science and Chair of the Independent Scientific Committee on Drugs, and President of the British Neuroscience Association, whose advisory role in Tony Blair's government came to a sudden end over his analysis that horse riding was more dangerous than ecstasy. Famed for forcing a fact based debate around drugs onto the agenda, Professor Nutt explains the importance of understanding the role pleasure plays when examining our relationship with drugs.

Leonie looks at the legal drugs we just can't live without, you know them as tobacco, sugar, and caffeine. When and why did we become so addicted to them, and can we actually handle them?