How has work changed for us over the millennia? Peter and Russell look at where we've come and what's in store for us as workers with the rise of automation.

In our third and final week looking at great unsolved mysteries Peter and Russell visit the Antikythera Mechanism. This complex analogue computer could predict astronomical positions and eclipses decades in advance. Then off to Peru and the mystery of the Nazca Lines. Why would people carve 70 different images into the Earth? Was this a way to communicate? Who would have done it? Join us as we talk about another two great mysteries.

Join Peter and Russell for part 2 of their look at where are all the aliens. Touching on the Fermi Paradox and chatting about the challenges of space, from success and remembering those we lost to disaster. We even ponder the question of what if we are alone?