Matt Baker and Ellie Harrison explore Wimbledon Common to celebrate its 150th anniversary. Matt saddles up with one of the UK's only mounted rangers, finding out how horseback patrols have been enforcing the common's 57 bylaws for the past seven decades. Ellie goes on the hunt for miraculous but often maligned moths, discovering how these winged wonders can be creatures of beauty and are more prolific pollinators than bees. And Matt and Ellie join together to celebrate the common's most famous ‘residents', the Wombles, meeting the daughter of their creator and seeing how these original eco warriors are still inspiring others today.

Elsewhere, Adam Henson has a busy day on the farm as some new bulls are introduced to the herd; Tom Heap investigates whether efforts to protect the world's oceans are delivering for UK waters; and, in the first of a four part series, explorer Dwayne Fields leads four youngsters at a crossroads in their lives on an expedition into the Welsh wilderness.

Anita Rani and Tom Heap head to Yorkshire's Flamborough Head. Anita visits England's largest onshore seabird colony at Bempton Cliffs, where she helps to track breeding numbers and witnesses a very special arrival as a rare albatross pays a visit. Below the cliffs, Tom explores some of the coast's chalk caves, discovering the rare life they support, and Tom and Anita are joined by local youngsters as they go on a rockpool safari to take stock of the marine life washed up at low tide.

Charlotte Smith investigates the environmental impact that increases in offshore windfarms are having both on land and at sea. Adam Henson visits an project that gives teenagers a step on to the farming ladder, and in the third of our four-part series with explorer Dwyane Fields, our four youngsters overcome their fear of heights, getting to grips with climbing a rockface - but things take an unexpected turn when one of the team has to leave the challenge early.