The woolly mammoth last roamed the earth more than three thousand years ago. But what if they returned now? That’s the idea behind best-selling author Ben Mezrich’s latest book, “Woolly: The True Story of the De-Extinction of One of History’s Most Iconic Creatures.” Based on the true story of legendary Harvard geneticist George Church, the book chronicles the scientific effort to resurrect this distant relative of the modern-day elephant – in an attempt to battle climate change. Jim Braude sat down with Mezrich and Church to discuss.