Season 2
15 episodes · Jun 15, 2026
Season Videos
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S2E1Paddington T-rex, The Farters and the Toxic Bake Off
Jun 15, 202625mCloudia Stinkleman presents The Farters, aliens try to steal the universe's most valuable substance: wood, a family adopts Paddington T-rex, and Chappell Groan sings Got to Go.
S2E2Tim Peake's Stinky Space Special
Jun 16, 202626mAstronaut Tim Peake and Pipette journey into space to reveal how to go to the loo on suction toilets and that the drinking water is recycled wee.
S2E3Bloodsuckers, Talking Dinos and Soil
Jun 17, 202625mThe Thantastic Three show why they are superheroes that matter, the handsome vampires get a taste of their own medicine, and dinosaurs don't do battle in Prehistomon!
S2E4Pooey, Grrrufts and Mammoth: Impossible
Jun 18, 202626mPooey goes to Uncle Skid's barbe-poo, Ethan Huntergatherer bites off more than he can chew in Mammoth: Impossible, some Witches get salty, and Clare Shedding presents Grrrufts.
S2E5Slug Boy, Belly Flops and Scientific Taskmaster
Jun 19, 202625mGreg Davies and Alex Horne host Scientific Taskmaster, and Einstein unpacks why belly flops hurt. Also, meet superhero team the Insect Revengers.
S2E6Blood, Bones and Body Bits Special
Jun 22, 202625mA guide to the human body, featuring the Handsome Vampires at the dentist, Big Brain losing muscle control, Newton explaining the need for sleep, and the ultimate disco DNA song.
S2E7Robots, AI and the Shape of Poo
Jun 23, 202626mDr Finklestone’s monster, Big Brain uses AI for evil, find out what animal is in the box, and fossil hunter Mary Anning sings Shape of Poo.
S2E8Platypuses, Heavy Metal and a Missing Biscuit
Jun 24, 202625mGaby Logan, Micah Richards and Alan Shearer host Elemental Match of the Day, Guy Mowbray narrates Elemental Gladiators, and Dr Big Brain’s mum comes to visit!
S2E9Catapulting Cows, School of Rocks and First Honk of the Proms
Jun 25, 202626mBig Manny guest stars for some mad science from the past, Einstein reacts to a cow on a catapult, Big Brain is on an evil field trip, and there is 'music' in First Honk of the Proms.
S2E10Aliens Invade, Everest Gets Taller and The Great British Fart Off
Jun 26, 202626mDr Big Brain regrets taking the Vantastic Beast for a spin, the hosts regret signing up to present The Great British Fart Off, and Gladiators Viper and Dynamite help Agent Goodie.
S2E11Mars – The Musical, the Clean Power Rangers and Silent but Deadly 60
Jun 29, 202625mThe Clean Power Rangers save the day, Dr Big Brain wants a lair on the moon, Steve Backfire searches for the Silent but Deadly 60, and we bring you Mars – The Musical.
S2E12Hexagons, Jelly Walls and Half Life
Jun 30, 202625mReality hit Love Flyland launches, salty street magic with Luna the Magician, and there's a Blur/nuclear physics mash-up.
S2E13Nasty Nature Special
Jul 1, 202626mA special show featuring some of the best Horrible Science nature-themed sketches, including The Great British Toxic Bake Off, The Farters, Soil Stan and biome banger Living Over There!
S2E14Light, Sound and Electricity Special
Jul 2, 202625mBig Brain tries to turn off the sun, there’s a real stink at First Honk of the Proms, and Tesla’s Queen-inspired Don’t Shock Me Now.
S2E15Manky Materials and Shifty States Special
Jul 3, 202626mA special collection of sketches, featuring appearances by Gabby Logan, Micah Richards, Alan Shearer, Guy Mowbray and Gladiator Dynamite... and Sir Isaac Newton and Einstein!