One Direction's Harry Styles has made a plea to fans saying he "wants to live in a world where every child can go to school".
Styles posted a YouTube video to his Twitter account to deliver the message, as part of the Action/1D campaign, in collaboration with Action/2015.
The campaign sees the One Direction boys helping to bring about global changes as they tackle some serious issues.
"I really loved my school days," Styles says. "When we went to Ghana we met children whose only dream was to get an education.
"At the moment they have to work all day, every day just to earn enough to eat. Going to school could literally change their lives, but for now all they can look forward to is a life of struggle and they deserve so much more."
As part of the campaign, 1D have asked their fans to describe the kind of world they want to live in, using video snippets and photos.
Each band member will in turn post their own video saying "I want to live in a world where...".
Among the issues they hope to tackle are poverty, inequality and climate change.
They launched their involvement in the global campaign, supported by numerous other A-list celebrities, with a video message, which they signed off saying: "Make 2015 the year we change our futures forever."