The Challenger Expedition 1872-1876

Misha Glenny and guests discuss the group which came to be known as the Levellers and emerged during what would become arguably one of the bloodiest and most turbulent periods of English history. After the First English Civil War, the Levellers started calling for reforms to achi ...  Show more

Misha Glenny and guests discuss an ancient civilisation who lived over 2000 years ago in the southwest of modern-day Libya. During prehistoric times, the Sahara Desert was greener and even had large lakes, but for the last 5000 years it has been a hyperarid environment. Extreme s ...  Show more

Melvyn Bragg and guests discuss the voyage of HMS Challenger which set out from Portsmouth in 1872 with a mission a to explore the ocean depths around the world and search for new life. The scale of the enterprise was breath taking and, for its ambition, it has since been compare ...  Show more

Melvyn Bragg and guests discuss the tiny drifting organisms in the oceans that sustain the food chain for all the lifeforms in the water and so for the billions of people who, in turn, depend on the seas for their diet. In Earth's development, the plant-like ones among them, the ...  Show more

Melvyn Bragg and guests discuss the people, plants and animals once living on land now under the North Sea, now called Doggerland after Dogger Bank, inhabited up to c7000BC or roughly 3000 years before the beginnings of Stonehenge. There are traces of this landscape at low tide, ...  Show more

Max Pearson presents a compilation of this week's Witness History programmes from the BBC World Service.

You'll hear the story of how a marine biologist made a shocking discovery finding small bits of plastics floating thousands of miles of the east coast of America.