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Canada defends exit from global deal to cut CO2 levels, plus the joys of urban birds.
BBC World Service Online
Latest from the region's rivers and reservoirs with Railton Howes.
Adam Walton meets Prof Tim Jacob and the team at Cardiff University's Smell Research Lab.
BBC Radio Wales
Sarah Pitt goes in search of the endangered pearl-bordered fritillary.
BBC Radio 4
Jane Davidson completes her journey along Wales's coastal path, from Bangor to the border.
4/5 Roger Deakin looks at forest birdsong in France and hunts bush plums with Aboriginal women
BBC Radio 4 Extra
BBC Somerset's weekly look at rural news, countryside issues, wildlife and local events.
Can the heroic age of Antarctic exploration show the way back to the Moon?
Mark Stephen and Euan McIlwraith take you on the train between Fort William and Mallaig. (R)
BBC Radio Scotland except MW
A weekly magazine exploring the science of our rapidly changing world.
BBC Radio Foyle
BBC Radio Ulster
Answering questions from everyday chemistry to quantum physics.
BBC Radio Cambridgeshire
BBC Radio Norfolk
BBC Radio Northampton
BBC Radio Suffolk
BBC Three Counties Radio
Raoul Moat - the media story, and prostitutes in Calcutta.
With the launch of the first privately funded vehicle to the ISS, we look at the industry
Monday 30 April 2012