In 2015 the United Nations announced a radical plan to change the world.

Global leaders drew up a list of 17 "sustainable development goals" to create a blueprint for a better future. Governments agreed to support the goals which cover gender equality, health provision, a good education and much more. Now 17-year-olds from 17 different countries tell us what they think needs to change if the world is to meet those goals by 2030.

Joyce lives in rural Rwanda and has to walk to a communal tap to collect water for her family every day. But she is lucky, she doesn't have to walk too far and the water is clean. Some of her friends face much longer journeys and have to collect water from ponds used by cattle or for laundry. She talks to activists, a government spokeswoman and other schoolchildren about Rwanda's water and sanitation situation.

Presenter: Sana Safi Producer: Kate Lamble

Project 17 is made in partnership with The Open University