How does a single chemical in our brains drive love, sex, consumerism and creativity? Why are some people more 'dopmaninergic' than others, why is that such a big deal for politics, and what does it mean for change-makers?

Daniel Lieberman is a clinical professor of psychiatry and behavioural sciences at George Washington University, co-author of the international bestseller The Molecule of More, and author of Spellbound: Modern Science, Ancient Magic, and the Unconscious Mind.