12 hundred children in the UK are born with a cleft lip or palate every year. Little is known about what causes it.
To help provide some definitive answers, the world's biggest ever research programme into the condition has been launched, with Bristol experts leading the project.
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The snow didn't fall from the sky though - it was brought in on trucks from Milton Keynes.
Mostly dry with sunny spells. Overnight frosts.
More than a thousand people have taken to the streets of Bristol in protest at the inauguration of US President Donald Trump