On this week’s Tech Nation, Moira speaks with Sir Ian Wilmut, the Scottish embryologist and the leader for the team that cloned Dolly the sheep. This 2007 BioTech Nation interview marked the 10th anniversary of Dolly’s birth. Then, Michael Shermer talks about his book, “Heavens on Earth – The Scientific Search for the Afterlife, Immortality, and Utopia.” We’ll find out who believes – or does not believe – in immortality