Over the years Eric Cheng has dived with the planet's most magnificent creatures. Now he is determined to use his photography to tell the true story of the most misrepresented and demonized species of all - sharks.
Professor Andre Geim is a condensed matter physicist at the University of Manchester. His life's work has been to gain a better understanding of the materials that make up the world around us. While just one subject can be a scientist's life's work, Andre has made switching fields a feature of his career. But while straying from the conventional path can be risky for a scientist, Andre has repeatedly turned it to his advantage. His "let's try it and see" approach means he's the only individual winner of the both the Nobel and the more light hearted Ig Nobel Prizes. He won the Nobel Prize for Physics in 2010 for uncovering the extraordinary properties of a material called graphene, but Geim can also lay claim to seeding two other new areas of physics research--levitation and gecko tape.
What makes us good or evil? It's a simple but deeply unsettling question. One that scientists are now starting to answer. Horizon meets the researchers who have studied some of the most terrifying people behind bars - psychopathic killers. But there was a shock in store for one of these scientists, Professor Jim Fallon, when he discovered that he had the profile of a psychopath. And the reason he didn't turn out to be a killer holds important lessons for all of us. We meet the scientist who believes he has found the moral molecule and the man who is using this new understanding to rewrite our ideas of crime and punishment.