With their flamboyant dress, and fabulous song and dance routines, tiny peacock spiders have captivated many hearts. But why does this little Casanova put on such a spectacular show? ask Michael Kasumovic, Damian Elias and Madeline Girard.
Let's get to the bottom of the story. Just why did human backsides become the shape they are? And what purpose do they serve? Find out in the latest episode of our evolution series: How Did We Get Here?
Having good friends and relatives isn't only valued by humans. In dolphin "families", positive social interactions are more than twice as important as genes in determining successful reproduction, new research shows.