BBC Earth på lördag – Tv-tablå 31 oktober

Ben ventures off the wild coast of Northern Ireland to the remote and rugged island of Rathlin. He stays with 41-year-old Rauri Morgan, a former HR executive who turned his back on corporate life.

We join Ben on the rugged cliffs of Cornwall, where he is staying with Davina and Todd and their family. Davina and Todd are a spirited couple who left the city for an empty field.

In Kavik, a looming blizzard threatens Sue's food supply. In Eagle, a break in the ice may derail Andy's spring projects.

Gregg visits Europe's largest biscuit factory in London where they produce 80 million biscuits every day. Following the production of chocolate digestives, he discovers the chocolate is actually added to the bottom of the biscuits.

Roman Kemp is ‘soaking up’ life in Glasgow, where children’s entertainer Susan is desperate for a good night’s sleep. Luckily, Roman has packed his rubber duckie – and some science.

Joanna's emotional exploration begins at the river's source, Germany's Black Forest mountains, ends at the Romanian/Ukrainian border, and marks two key anniversaries. The first is D-Day - the beginning of the end of World War Two and a brief era of freedom.

Joanna discovers that the "blue Danube" is both a constant reminder of Europe's unchanging beauty, its past triumphs and current threats - and the thread that keeps it powerfully connected.

A baby gorilla tries to escape his mother, a swimming lesson for alligator hatchlings, the baby alpaca who copies everything his mother does, and the seal pup left home alone.

The icy adventures continue for the hardy characters living in rural Alaska.

The icy adventures continue for the hardy characters living in rural Alaska.

For the Hailstones, the window to hunt big game animals grows shorter with each passing day. Sue Aikens must stay alert and aware of predator presence in Kavik.

Scientists believe that challenging the body can benefit the brain. Dr Michael Mosley learns how meditation can help fight dementia and how people can sharpen their minds by being more like children.

History gets personal as historian David Olusoga uncovers how British imperial history is family history.

Under attack from intruder male lions, the mums with young cubs must find the pride.

Back together again the lion mums struggle to feed many mouths, and one cub is starving.

Our Alaskans face various emotional challenges as they push through a dark winter.

Ben journeys from Stroma, inhabited 1,000 years ago, to Swona, its first inhabitants being the Vikings and then to the towering prehistoric cliffs of St Kilda, the most remote of Scotland's islands.

The remaining astronaut candidates face a simulated emergency splashdown where they have to escape from an underwater capsule. Later, a social event gives the panel a chance to scrutinise the candidates' characters. Not all of them make the grade.

In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

More stories of the brave and hardy people who live below zero in Northern Canada.

Ben Fogle journeys to the foothills of the Indian Himalayas to live with former fighter pilot, Steve Lall, who is now a mountain farmer.

Under attack from intruder male lions, the mums with young cubs must find the pride.

Back together again the lion mums struggle to feed many mouths, and one cub is starving.