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Ewan McGregor is backing an appeal in aid of starving children in east Africa.
Ewan, an ambassador for Unicef UK, will appear in a short film asking viewers to donate to the Time To Share campaign.
The clip will be broadcast online and on television, as well being as shown to cinema audiences around the UK.
The campaign is designed to encourage members of the public to share a little of what they have to help save the lives of half a million children about to starve to death in famine-hit Somalia.
The clip shows Ewan saying: "Before the film starts, I'd really like your help. Before you switch it off, it would be great if you could take out your phone.
"Right now 250 children are dying in Somalia every day. That's one little girl or boy dead every six minutes. This is a famine. And children are dying. They desperately need life-saving food and water. And they need it now.
"It's simple: they're hungry, we can help. It's time to share."
The Trainspotting star is said to have travelled the world with Unicef to see the organisation at work.
