Karl Kruszelnicki

Alex, Rachael, Kiya, and Jemima fly the Explorer Mobile to the moon; Dr Karl and Rachael have fun testing the Bottle Diver experiment; there's a colourful coral reef through the windows.

Emma and Alex decorate the Explorer Mobile launch pad; Kiya and Jemima go whale watching; Dr Karl explains how red crabs on Christmas Island cross roads safely; they learn about astronauts through the windows.

Zindzi and Rachael explore the deep blue sea; Kiya and Jemima discover an underwater volcano; Zindzi and Dr Karl make their own volcano experiment.

Dr Karl has shared his passion for life and science with Australians for decades. He shares the fascinating life story that led him to broadcasting while Anh endeavours to capture his natural curiosity and enthusiasm on canvas.

For the special season opener of series eight of Home Delivery, Australia?s favourite boffin Dr Karl takes Julia on a personal tour of Wollongong, visiting his childhood home and the Port Kembla steelworks, and explains how they fired-up his endless curiosity and search for answers.