BBC Earth Astro

Actor Michael B. Jordan joins Grylls in Wales where they start their journey by dropping into rough waters off the coast before making their way to the mountains.

Wild and unpredictable, the Scandinavian coast is a place of haunting beauty and dangerous extremes, home to feisty puffins, orcas, eagles, otters and intrepid base jumpers.

Simon revisits the incredible characters he's met while travelling the globe.

Actor Ed Helms faces sheer cliffs, crumbling rock and a cringeworthy dinner menu while atop Colorado mountains; Helms discusses the road to his career in comedy.

Joanna starts her 2000 mile journey across Japan in Hokkaido.

Joanna travels the length of India, showing us delights like the flower-sellers of Madurai, before taking us back to Uzbekistan for gory tales and gem making.

Around 12,000 years ago, as the Ice Age finally thawed, humanity made a dramatic shift - abandoning nomadic life for permanent settlements.

Actor Ed Helms faces sheer cliffs, crumbling rock and a cringeworthy dinner menu while atop Colorado mountains; Helms discusses the road to his career in comedy.

Joanna starts her 2000 mile journey across Japan in Hokkaido.

Joanna travels the length of India, showing us delights like the flower-sellers of Madurai, before taking us back to Uzbekistan for gory tales and gem making.

Around 12,000 years ago, as the Ice Age finally thawed, humanity made a dramatic shift - abandoning nomadic life for permanent settlements.

Actor Ed Helms faces sheer cliffs, crumbling rock and a cringeworthy dinner menu while atop Colorado mountains; Helms discusses the road to his career in comedy.

Joanna starts her 2000 mile journey across Japan in Hokkaido.

Around 12,000 years ago, as the Ice Age finally thawed, humanity made a dramatic shift - abandoning nomadic life for permanent settlements.

Joanna starts her 2000 mile journey across Japan in Hokkaido.

Professor Brian Cox explores the solar system's hidden realms, between and beyond the planets, where countless worlds lie hiding in the darkness.

Actor Ed Helms faces sheer cliffs, crumbling rock and a cringeworthy dinner menu while atop Colorado mountains; Helms discusses the road to his career in comedy.

Joanna travels the length of India, showing us delights like the flower-sellers of Madurai, before taking us back to Uzbekistan for gory tales and gem making.

Joanna starts her 2000 mile journey across Japan in Hokkaido.

British comedian and travel enthusiast Griff Rhys Jones explores the Frozen Wilds of Manitoba, North Canada, and visits a town that sometimes has more polar bears than people.

Joanna travels the length of India, showing us delights like the flower-sellers of Madurai, before taking us back to Uzbekistan for gory tales and gem making.

During winter most animals abandon the polar regions, but a few extreme survivors remain. This is the story of their battles to endure the planet's harshest winters.

Professor Brian Cox explores the solar system's hidden realms, between and beyond the planets, where countless worlds lie hiding in the darkness.

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