The National Geographic magazine has launched a new photographic project called 'Your Shot' - asking readers to submit their pictures as part of its 125th anniversary celebrations.
'Your Shot, National Geographic's photo community' calls on readers of all levels and abilities to send in their best images through a specially-created website. So far thousands of images have been uploaded to the site by people from all over the world.
There is a different assignment every 30 days on a different theme, the current one is 'Explore Our Changing World'.
The National Geographic is hoping to collate and tell as many readers' stories as possible through the photographs and the best images will be published in the magazine each month.