Highlights from this year's Edinburgh Festivals. Nish Kumar celebrates the new, the challenging and the shows that just defy description. Featuring singer-songwriter St Vincent, activists Pussy Riot and a show performed entirely in a burnt-out car.

Highlights from this year's Edinburgh Festivals For one month in August, Edinburgh is home to brave new ideas, heated debate and some of the freshest thinkers in the world.

Nish Kumar spends time at the Book Festival, visits some of the venues offering lively controversy and explores why podcasters are seeking out live audiences.

Nish Kumar is behind the scenes with some of the biggest names and hopeful first timers in comedy as they try out new material and new acts. He follows comedy performers and entrepreneurs at the Edinburgh Festival who are risking it all to get laughs from the four million visitors who arrive in the city in August.