One Direction launch humanitarian project

One Direction are calling on their fans to lobby world leaders for change before a key summit in September (15).

The What Makes You Beautiful hitmakers have launched a campaign called Action 1D, and they want their followers to submit videos or photographs in which they describe how they want the world to be.

The submissions will be compiled on the band's website and could be included in their Action 1D film, which they hope will encourage world leaders to make positive changes ahead of the United Nations summit, where a new universal set of humanitarian targets will be drawn up, and the U.N. Climate Change Conference in December (15).

Harry Styles says, "2015 is a year like no other and we want you to really make it count. You guys are truly amazing and over the years you've shown us what you can achieve if you rally together. At two historic summits in September and December, world leaders will make decisions that effect important human issues like extreme poverty, inequality and climate change."

Louis Tomlinson adds, "So now's the time for us to have our say, take action and to raise our voices to show that we care. We can be part of something that actually makes a difference to our future and helps people that need the support."

Liam Payne continues, "Please will you join us to put pressure on our leaders. All you need to do is tell us what you want your world to look like in the future. You can make videos or send us pics (sic), it's easy," and Niall Horan concludes, "Become part of Action 1D. Make your voice heard and make 2015 the year we change our futures forever."

Further videos from the band and instructions to fans will be released throughout July (15).

Their campaign is in conjunction with Action 2015, a group of more than 1,600 international organisations which are "committed to fighting for a better future".