Experimenters Arnav and Ayomide visit Nina to investigate what an amphitheater is.

Experimenters Billy and Katy visit Nina to investigate how domes are built.

Experimenters Hugo and Ugochi visit Nina to investigate how a spider builds its web.

Experimenters Ethan and Eva discover what the walls of an igloo are made from.

Experimenters Lyla and Sandy find out if we could live in an underwater house.

Experimenters Taite and Taruni visit Nina to find out why some animals live underground.

Experimenters Livingstone and Oisin visit Nina to investigate how lighthouses are built.

Experimenters Dylan and Phoebe visit Nina to find out why people use arches in buildings.

Experimenters Ben, Eryn and Kanie visit Nina to investigate how rollercoasters work.

Experimenters Poppy and Sugar visit Nina to find out how to build floating houses.

Andreea, Soham and Yusuf visit Nina and discover what happens when gas expands quickly.

Alexander, Billie and Marianna visit Nina and discover what a cantilever is.

Samuel and Sofia discover why skyscrapers need to be stronger the taller they are.

Experimenters Bethan, Corey and Rhianna see what happens when you build a dam in a stream.

Experimenters Aaron and Sylvia visit Nina and discover what makes windmills' sails turn.

Nina and her young Experimenters discover how builders make holes in walls for windows.

Nina and her young Experimenters explain how birds keep their eggs safe and warm.

Nina and her young Experimenters conduct an experiment to explain why piers stay strong.

Nina and her young Experimenters conduct an experiment on how roof tiles keep houses dry.

Nina and her Experimenters show why the Eiffel Tower was built with lots of triangles.