3/3 Richard Fortey investigates mammal and insect fossils in a volcanic lake in Germany.
3/4 Monty Don takes a look at the new plants being launched at the 2015 show.
2/3 How the Great Plains saw stories of Indians, wagon trains, homesteaders and cattle drives.
2/3 The life-or-death decisions facing doctors and midwives in neonatal emergencies.
1/2 Dallas Campbell reveals the hidden wonders beneath our feet.
Biologist Lucy Cooke investigates why animals are turning up in unexpected places.
2/4 Rachel de Thame reveals the winner of Rose of the Year.
2/3 Plummeting temperatures jeopardise Kate Humble's journey through the Siberian tundra.
1/3 How an entrepreneur tried to build a giant zip-wire ride on a Lake District mountain.
Richard Hammond investigates the hidden mysteries of everyday weather.