Caz Graham looks at new eco-friendly farming techniques at Aberystwyth University.
Tom Lovejoy argues that biological diversity lies at the heart of sustainable development.
Helen Mark visits Heathrow to discover how the airport encourages biodiversity.
Kathy Willis uncovers the role seedbanking plays in conserving worldwide plant diversity.
Sybil Ruscoe meets renowned American agricultural pioneer Joel Salatin.
HRH The Prince of Wales shares his passion for the rich biodiversity of Transylvania.
Wildlife cameraman John Aitchison spends a month living in a Rainforest canopy.
Sarah Swadling discovers how mob grazing is transforming a coastal South Devon farm.
Adam Rutherford is at Kew Gardens to discuss challenges in preserving global biodiversity.