The latest national and international news, exploring the day's events from a global perspective.
On the third leg of his journey, Michael Portillo learns how demand from rail commuters fuelled the development of the modern printing press. Show more
Michael Portillo's journey to Wolverhampton continues. He visits Clifton Zoo in Bristol and finds out why Gloucester station became known for lost luggage. Show more
Professor Marcus du Sautoy explores why we are driven to measure and quantify the world around us. He begins by telling the story of the metre and the second. Show more
Simon Sebag Montefiore explores modern Istanbul in search of the last centuries of Christian Byzantium, when the once glorious city was buffeted by enemies from both east and west. Show more