BBC Four HD Thursday

Evolutionary biologist Ben Garrod explores the ways that the skeleton aids flight, looking at how pigeons fly and albatrosses make long migrations

Richard Holmes traces the events of the Battle of the Somme on July 1, 1916, when 57,000 Allied soldiers were killed or wounded in a matter of hours

Alice Roberts joins archaeologists in the North as they uncover Roman writing tablets, a lost monastery and a rare Bronze Age weapons hoard

First of a two-part documentary revealing the results of a revolutionary project that aims to uncover the secrets of the historical site

The Mansfield theatricals collapsed when Sir Thomas returned unexpectedly from Antigua. His disapproval was deep except towards Fanny, who had refused to take part

Henry goes to Mansfield to tell Fanny of William's promotion and, to Fanny's dismay, Henry confesses his love for her

Fanny is attacked by Sir Thomas for rejecting Henry's marriage proposal and is sent back to Portsmouth to reflect on her position

Maggie Aderin-Pocock and Pete Lawrence celebrate the 350th anniversary of the Royal Observatory by hosting a special dinner party for a host of science communicators

Richard Holmes traces the events of the Battle of the Somme on July 1, 1916, when 57,000 Allied soldiers were killed or wounded in a matter of hours

Alice Roberts joins archaeologists in the North as they uncover Roman writing tablets, a lost monastery and a rare Bronze Age weapons hoard

First of a two-part documentary revealing the results of a revolutionary project that aims to uncover the secrets of the historical site