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When Darren Devlin is arrested for destroying his school with his bare hands, it's not just the police who are after him. Enter Marek Masters, 14 years old, 19% alien, and the most intelligent, most wanted 'almost human' alive. Marek is here to tell Darren the truth - he is 21% monster, and toget...

For once, 21% monster teenage-boy Darren Devlin thinks he has the upper hand over Xastris, the secret organisation that transformed him into a genetically-modified superhuman. Since joining forces with 19% alien boy Marek Masters, 17% sabre-tooth polar-bear Aurora Valero, and now 16% alien girl G...

Join a friendly mechanic for a day working on a research base and out on the ice. Learn about the challenges of surviving in the Antarctic, explore the incredible landscape and meet the local wildlife, as you discover all the amazing and important science that is being done down in the South Pole.

Andy and Terry have expanded their treehouse! There are now 13 brand-new storeys, including a dodgem-car rink, a skate ramp, a mud-fighting arena, an antigravity chamber, an ice-cream parlour with seventy-eight flavours run by an ice-cream-serving robot called Edward Scooperhands, and the Maze of...

Andy and Terry have expanded their treehouse! There are now 13 brand-new storeys, including a dodgem-car rink, a skate ramp, a mud-fighting arena, an antigravity chamber, an ice-cream parlour with seventy-eight flavours run by an ice-cream-serving robot called Edward Scooperhands, and the Maze of...

Andy and Terry's amazing treehouse has 13 new levels! They've added a chocolate waterfall you can swim in, a volcano for toasting marshmallows, a bulldozer-battling level, a baby-dinosaur-petting zoo, a not-very-merry merry-go-round, a boxing elephant called the Trunkinator, an X-ray room, a disc...

Andy and Terry's amazing treehouse has 13 new levels! They've added a chocolate waterfall you can swim in, a volcano for toasting marshmallows, a bulldozer-battling level, a baby-dinosaur-petting zoo, a not-very-merry merry-go-round, a boxing elephant called the Trunkinator, an X-ray room, a disc...

Andy and Terry's incredible, ever-expanding treehouse has thirteen new storeys! It used to be 13, then 26, then 39, but they keep expanding! This time, there's a new watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes!), a rocket-powe...