Nina investigates how waterfalls are made.

Nina investigates why astronauts float in space.

The explorers visit Death Valley in America.

Nina investigates how we know the Earth is round.

Nina and Olli investigate how coal is made.

Nina investigates what shooting stars are.

Nina investigates how caves were formed.

Why does light from the sun only shines on one side of the moon?

Nina investigates whether Loch Ness has always looked the same.

Nina is taken to see Old Faithful in Yellowstone National Park.

Nina investigates why rocks are stripy with the help of Luke.

Nina investigates why humans live on planet Earth.

Nina investigates how humans know about dinosaurs.

Explorers Logan and Sophie find out why we have night and day.

Nina examines how cliffs were created.

Nina investigates how people on Earth find out about other planets.

Nina investigates why rivers are wiggly.

Nina investigates how many planets are in our solar system.

The scientist visits Giant's Causeway in Northern Ireland.

The budding scientist explores volcanoes with her friends.

Nina investigates how mountains were made, with the help of Luke.

Nina explores how people can live in space with the help of Bud.

Nina explores how sand dunes are made with the help of Felix.

Nina and friends learn everything about the Grand Canyon.

Nina investigates how space rockets work.