Brett Westwood investigates the potential for restoring large areas of heathland that could be unlocked by the thinning of Forestry Commission woodlands. Show more

As the Isle of Man considers designating an area of their coastline as a marine nature reserve, Brett Westwood asks how feasible it is to set up a conservation area in the sea. Show more

Karen Partridge goes in search of the evidence that a young gorilla may have been living anonymously in England as early as 1855. Show more

Brett Westwood encounters the large blue butterfly on the Somerset Downs, which was reintroduced 25 years ago after being declared extinct in 1979. Show more

Brett Westwood visits the Calf of Man, a rugged island to the south of the Isle of Man, to meet a particularly enigmatic seabird which is yet to breed on the island. Show more

Tunnel-boring larvae, feet-stomping termites, head-banging beetles and a choir of tuneful songsters join Paul Evans in this unusual sound safari around an 'orchestra' of insects. Show more

Accompanied by a piece of limestone inscribed with the words from one of her poems, Alyson Hallett travels to Australia, in a project that explores the migration habits of stones. Show more

The Severn is the largest, muddiest and most dynamic estuary in Britain, and thousands of birds use it every year as a stopping-off point on their migrations. Show more

Tessa McGregor explores the Sea of Cortez, a whale and dolphin hotspot off the coast of Mexico where the widest variety of cetaceans on earth can be found in one place. Show more