The latest national and international news, exploring the day's events from a global perspective.

Michael Portillo observes the engineering feat involved in building the railway along Dublin's treacherous East coast and explores a Victorian jail. Show more

This episode of the science series explores a dizzying world of cosmic bounces, rips and multiple universes, and finds out what happened before the big bang. Show more

In a never-before-attempted experiment at Bristol Zoo, Liz Bonnin and a team of experts stay up all night to track the diverse sleep patterns of animals from lions to meerkats. Show more

Documentary compiled from the video diary of a Palestinian farmer, who films unrest in his West Bank village, using cameras which are consistently shot or smashed. Show more

Expert John Wass presents a documentary telling the story of how hormones were discovered and remain at medicine's cutting edge as we try to deal with modern scourges like obesity. Show more

Danny Baker embarks on a Lilliputian odyssey through all things titchy - from model trains to pint-sized cows via the mecca of the miniature, the model village.

A look at the period from the late 90s to the present day, when the architects were at the peak of their success but also faced some huge controversies. Show more

In a never-before-attempted experiment at Bristol Zoo, Liz Bonnin and a team of experts stay up all night to track the diverse sleep patterns of animals from lions to meerkats. Show more