Scientist Nina and her young experimenters discover how substances change and react. Nina looks at an onion under her microscope to find out why it makes her cry. Show more
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Scientist Nina and her young experimenters discover how substances change and react. Nina looks at an onion under her microscope to find out why it makes her cry. Show more
The UK's most watched and most loved channel for the under-sixes, dedicated to delighting and surprising its pre-school audience.
