The villagers of Hemsby in Norfolk try to stop their homes falling into the sea. (R)
BBC Two Scotland only
2/6 Capturing the dazzling array of creatures that live in China's most beautiful landscapes. (R)
Kathy Willis explores Nikolai Vavilov's pioneering search for unused varieties of crops.
BBC Radio 4 FM only
Prof Kathy Willis examines the legacy of early encounters with alkaloids from plants.