Katty Kay in Washington and Christian Fraser in London return to report on the events that are shaping the world.

Dr Helen Czerski looks at volcanoes. New thermal imagery and ultra high-speed photography capture the complex processes crucial to understanding how and why they erupt. Show more

Series exploring how the human body charts our evolution. How our ancestors' hunt for food changed the shape of our face, the way we see and how we attract the opposite sex. Show more

From hyper-intelligent parrots to sinister snails and magical constellations of glow-worms, this is the story of New Zealand's wildest places and resilient pioneers. Show more

Comedy drama. It's bath night for Rosie and, as usual, that means chaos as she insists on having all the bubble bath. Emily decides that she needs to form a strategy. Show more

Sam Willis traces the story of the famous trade route. He explores Venice's Renaissance architecture and art before travelling to the beginning of the Silk Road in China's Xian. Show more

Howard Goodall explores why Sgt Pepper is still seen as so innovative, so revolutionary and so influential, with the help of outtakes and studio conversations between the band. Show more

Brenda Emmanus meets and profiles ten great living British designers, to find out what inspires them and explore how they have responded to society's evolving tastes. Show more

Series exploring how the human body charts our evolution. How our ancestors' hunt for food changed the shape of our face, the way we see and how we attract the opposite sex. Show more

From hyper-intelligent parrots to sinister snails and magical constellations of glow-worms, this is the story of New Zealand's wildest places and resilient pioneers. Show more