Steve Brown is on the trail of an elusive and endangered Scottish creature - the mud snail. They may not be one of nature's glamour species, but these tiny molluscs play an important role in the ecosystem. Anita Rani cycles along the sands of the East Lothian coast on a 'fat bike'. With larger than normal tyres they leave virtually no trace in the sand, having as little impact on the natural habitat as possible. Matt Baker visits St Abbs - a community who refused to let their lifeboat service go under. When threatened with closure they independently took on the community lifeboat, saving 104 years of history. There are ten million cattle farmed in the UK, and it is a well-known fact that livestock like cows produce a lot of methane, which contributes to global warming. Adam Henson is in Edinburgh at an agricultural college where they are working on a solution. Tom Heap looks at companies buying up swathes of countryside and selling it on with planning permission for houses.

As the birthplace of the industrial revolution, this is a landscape rich in coal and iron. But the legacy of one of the ancient coal shafts is a river that is colourful for all the wrong reasons - it runs bright orange with iron-rich ochre from the rocks below. Matt Baker immerses himself in Shropshire Wildlife Trust's Love Your Rivers project. It's a huge conservation operation, involving 12 organisations and an army of volunteers inspired to give their landscape some TLC. Ellie Harrison accompanies sniffer-dog Lunar in a search for pine martens. She also meets James Sherwin - a man who set himself a 12-month mission - to cook for a whole year only using ingredients farmed and grown in Shropshire. Steve Brown spends the day with Becky Haywood, an artist who combines her love of nature with molten glass. Adam Henson has a round-up of life on the farm as spring sets in. As the numbers of one the UK's favourite mammals plummets, Tom Heap asks where have all our hedgehogs gone?