BBC Four Wednesday

Paul Rose explores Wharfedale, where he meets some of the women whose story inspired Calendar Girls and finds out why bats are under threat in the area

Robbie Cumming navigates the River Severn, and takes an unexpected bath as he tumbles at the Tardebigge lock flight in Worcestershire

Scientists uncover the secrets of the Mandrin Cave in France, where the remains of a Neanderthal were found in 2015

Documentary following a team of international engineers as they build a steel structure to entomb the ruins of the nuclear power plant, destroyed in the 1986 disaster

Hazel Irvine presents live coverage of the evening session on day 12 at the Crucible Theatre in Sheffield, where two quarter-finals reach a conclusion

A down-and-out woman wanders through life in an alcoholic haze without a job, a home or any money. Jeremy Sandford's 1971 drama, starring Patricia Hayes and Barbara Jefford

Writer Stephen Smith finds out what it took to survive and prosper in the most artistic and decadent royal courts in history, beginning with that of Richard II

Scientists uncover the secrets of the Mandrin Cave in France, where the remains of a Neanderthal were found in 2015

The history of the Empire State Building, with an account from a steelworker involved in its construction and a widow whose husband died when his plane crashed into the 79th floor