Channel 5 HD Monday

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Experts explore the history and science behind the supervolcano hidden seven miles beneath Yellowstone National Park, and assess the possible dangers of an eruption

Allan Chapman presents a profile of Albert Einstein, whose theory of relativity revolutionised science, while his ideas led to diverse inventions

Nick Baker sets out to view rare wild vampire bats in the forests of Costa Rica, determined to dispel some of the myths surrounding them

Ann Maurice helps a widower sell his slightly neglected 200-year-old cottage so he can pack up and start a new life in Scotland

Showbiz news and gossip

When Tom and Moose volunteer to help Mandy and Norman spot a fox, the animal scampers off with Moose's hat

Everest and Jake try to save a baby penguin by making a bridge out of canoes, but end up floating out to sea on it

Bop and Boo want to share their indoor rainy day games with their active frog friend Arnold, but they have trouble finding the right activity for him

Mrs Kangaroo takes everyone on an adventure under the sea in her submarine to see the Great Barrier Reef

Part four of four. The family's Australian holiday is coming to an end, but they still have time to play with a boomerang and make friends with Mr Wallaby

Madame Gazelle and the playgroup share their favourite nursery rhymes, singing Little Bo Peep and marching along with The Grand Old Duke of York

Pip sets the rules of a dance competition and appoints Zac as the judge

Doodle asks Odo to teach her how to be funny

Tweedy and Fluff find a soapy sponge in the yard. Lots of bouncy bubbly fun but does Fluff know when to stop?

Gareth takes the children on a celebration hike in the mountains, but he ends up getting them all lost and the group requires rescue from the team

When Percy and Kana have a near-collision because they're distracted, they blame insufficient safety measures