Do you have a favourite fun fact? Something to share when you're at dinner parties or filling an awkward silence? This week, Peter and Russell will try and get through 100 fun facts. Do you think they can do it? Do they side track too much? Let's see if they can get through 100 fun facts or will this turn into a multi-episode challenge.

Have you ever listened to a debate or maybe participated in one and thought, that doesn't sound right? Perhaps your point was lost down a rabbit hole of confusing counter-argument? Then this episode is for you. This week Peter and Russell debate their way through logical fallacies, how to spot one and how to brush it off and win that debate.

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.