Comedian Alan Davies attempts to answer this proverbial question.
Answering a deceptively simple question: What Is One Degree?
Alice Roberts discovers the story of how humans left Africa to colonise the world.
Uniquely in the animal kingdom humans have managed to adapt to every environment on Earth.
Michael Mosley goes on a voyage through the workings of the inner human body.
Gabriel Weston discovers the surprising truth about why people are piling on pounds.
Michael Mosley uncovers surprising new research about exercise.
Sir David Attenborough investigates whether the world is heading for a population crisis.
Sir David Attenborough takes a look at the impact of climate change.
Maggie Aderin Pocock explores our intimate relationship with our only natural satellite.
How and why did Darwin come up with his theory? Why do we think he was right?
Prof Iain Stewart tells the epic story of how planet Earth has shaped human history.
Dr Alice Roberts asks if humans are still evolving, and where we might be heading.
Why are scientists releasing top predators close to where people live?
Creating the world's most accurate mechanical replica of a walking juvenile T. rex.
What was the cause of the only known dinosaur stampede?