Harrison is joined by rapper and musician Kid Koala, a special guest canine, and opera singer Lindsay Michael.
Harrison finds out how animals have been building structures for millions of years, as well as the best way to build structures.
Harrison finds out lots of new stuff about teeth, including why some are sharp and some are flat, why birds have beaks instead of teeth!
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Stories include, 'Malaysia deal in ruins', 'Scott Morrison joins 7.30', 'Funding row over domestic violence alarm', 'John Cleese joins 7.30'.
Harrison finds out if girls grow faster than boys and if you can make yourself grow taller.
How do boats float? Why does popcorn pop? Could a dinosaur live today? Join Kellyn, resident scientist Clare, the crew and a cast of historical characters as they brainstorm answers to your questions.
Shrek is an animated family movie that has turned the classic fairytale formula upside down. Lord Farquaad (John Lithgow), an evil tyrant who reigns over the kingdom of Duloc, is paying a cash reward for people to turn in all the fairytale characters. As a result the fairytale characters have invaded the swamp that is home to Shrek - a reclusive, smelly green ogre.
What keeps a boat afloat and what role does its shape play in helping it to move? The quest to answer these questions leads us to investigate a range of possible boat building materials, including fibreglass, which we see sprayed into a mould then removed as a hardened shell.
Harrison sets off on an investigation of such sleep phenomena as yawning, snoring, and sleepwalking. Along the way he shows kids how to make other people yawn and how to make it seem like they are fast asleep (with fake snoring!). Viewers get to find out what causes nightmares and how to make bad dreams go away.
This program follows the morning routine of a young boy, and looks at how his body works as a system. He uses his muscles and bones to get out of bed, and as he yawns, the program explains how his lungs, blood and heart work. As he eats his breakfast the program looks at his digestive system and introduces his brain as the control centre of the body to make all these things happen.
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