A mystery which may have been baffling you for years has been solved by scientists at Newcastle University - why do fingers go wrinkly in the bath?
You probably didn't even know you needed to know why - but their findings are causing a stir around the world.
Our reporter Julia Barthram has been to test their theory.
You can watch the full report from her below.
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People could suffer vision loss or infection from the lenses, which are often sold illegally online, in shops and on market stalls.
Between 2011 and 2014 reports of self-harm among British girls aged between 13 and 16 rose by 68%, according to new research.
The gallery has been made possible through the Heritage Lottery Fund who provided a grant of £422,600.