In this time of crisis, many, many people are watching marbles roll down miniature race tracks. We talk to Dion Bakker, one of the Dutch brothers behind the hit marble-racing YouTube channel that's filling the void left by cancelled sports events. We also catch up with atmospheric physicist Meganne Christian, who spent a year in Antarctica, to hear her tips on surviving isolation. Also this week: Viktor Orbán's terrifying power grab, and trees, lots of trees.