Working with the BBC, Neil MacGregor, the Director of the British Museum, has launched a downright smart project. A History of the World in 100 Objects uses important pieces from the museum's collections to recount the long history of humanity. Throughout the year, the serialized radio program will air 100 episodes, each averaging 15 minutes, and they will cover two million years of human innovation and artistic creation. Below, I've included a recent episode that revisits the Olduvai hand axe, a tool invented some 1.2 million years ago that proved vital to human evolution and our migration out of Africa. You can access the full series in audio via iTunes, RSS Feed, as well as other formats found here. A big thanks to Stephen in the UK for flagging this production for us.