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Curious Cases Series 5 Episodes Available now
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The Forgetful Child
Why don't we remember the first few years of our lives?

The Astronomical Balloon
'How far up can a helium balloon go? Could it go out to space?' asks Juliet Gok, aged 9.

A Code in Blood
Why do we have different blood types? Drs Rutherford and Fry investigate.

The World That Turns
'Why does the Earth spin?' asks Joe Wills from Accra in Ghana.

The Broken Stool
How much does the bacteria inside my body weigh?