Television

Witness the extraordinary wildlife and remarkable people of Earth's highest mountain range, where Tibetan monks perform ancient rituals, snow leopards prowl the mountainsides and bizarre snub-nosed monkeys survive in frozen forests.

For their Signature challenge, the bakers go all out with two types of sponge puddings. In the Technical, they face Queen of Pudding, a recipe direct from the archives of Mary Berry. A Showstopper strudel stretches them to their limits.

A fugitive points the way to riches. Ross and the free traders sail into a trap. Caroline and Dwight hatch a plan. Demelza faces house arrest.

Drill down to discover how Earth's natural treasures provide bountiful energy to power our modern world yet are also driving us to seek new, cleaner alternatives that can help us keep the lights on.