Philip Hoare attends the necropsy of a porpoise and thinks about going inside a whale.
Can animals be gay? Hermione Cockburn investigates the biologists who say they can.
Melvyn Bragg and guests discuss the evolutionary history of the whale.
Brett Westwood explores our complex relationship with the giants of the sea, whales.
Matthew Sweet champions whales while Tom Holland is on the side of the dinosaurs