Richard is deep in book deadline Hell, but still has time to tweet Lord Sugar about his maths expertise and consider how much human DNA needs to be in a mouse to make it a viable partner. His guest is podcaster, sometimes actor and historian Greg Jenner. They discuss repeatedly falling downstairs, whether historians are duty bound to have sex with Neanderthals, what new history has happened and have a detailed examination of the history of celebrity, thanks to Greg's ace new book, Dead Famous. Find out why Abraham Lincoln grew that beard, why Julius Caesar isn't a celebrity and whether Richard is and how faking a death almost led to a Hollywood actress being killed. Plus bumping into Scarlett Johannson, whether an iPad counts as homeschooling and a great use for the Bayeaux Tapestry. Buy Greg's most excellent book here - https://www.amazon.co.uk/Dead-Famous-Celebrity-Greg-Jenner/dp/0297869809/