What's On - TV & Radio Listings

Dr Watson's weekly selection of relevant, or just interesting, programmes on TV and Radio.

Sunday 20 May

Living World

6:35am

BBC Radio 4 FM

Sarah Pitt travels to the Usk Valley in south-west Wales to observe lesser horseshoe bats, whose colonies in Britain have dwindled since the early 20th century, but Sarah learns about a local initiative led by the Vincent Wildlife Trust to build a safe, sustainable environment for the bats, which roost almost exclusively in buildings. Last in the series.

Countryfile

6:25pm

BBC1

The team visits Dumfries and Galloway to launch this year's photography competition, which has the theme of `Walk on the Wild Side'. Chris Packham is joined by Top Gear's Jeremy Clarkson to search for inspiration for the contest, while Matt Baker explores parts of the county that have been used as film locations, and Ellie Baker and John Craven investigate the area's wildlife. Plus, Adam Henson explores breeds of cattle native to Gloucestershire and Tom Heap learns why young people today pursue a career in farming.

Monday 21 May

Camel Country

11:30am

BBC Radio 4 FM

Biologist Tessa McGregor explores the importance of camels in Arabic culture as she travels through the deserts of Oman with one of the few remaining frankincense caravans. She learns that even though the people of the Arab peninsula have gone from nomadic poverty to an age of air-conditioned luxury in the past two generations, the animals are still venerated and regarded as a powerful symbol of wealth.

Tuesday 22 May

Extinct!

11:00am

BBC Radio 4 FM

2/3. Adam Rutherford reveals why many biologists believe humanity has set Earth on course for its sixth global mass extinction. He assesses the roles of hunting, habitat destruction and climate change in making researchers draw this conclusion, and visits a project in India aiming to save the Ganges river dolphin from extinction.

Costing the Earth

3:30pm

BBC Radio 4 FM

Miranda Krestovnikoff investigates reports that the jellyfish population of the world's oceans is reaching dangerously high levels. The creatures are eating their way through entire baby fish colonies and threaten to drive marine ecosystems back to a state similar to that of the primitive Cambrian era, but the presenter discovers there is not yet enough proof that jellyfish numbers are really increasing in the long-term. Last in the series.