Global Citizen festival: Beyoncé, Big Bird and Ban Ki-moon unite for all-star show

Concertgoers committed to ending extreme world poverty by 2030 were entertained by of A-list celebrities and politicians in all-day event

Global Citizen's goals aren't exactly small-scale. The NGO, backed by the United Nations, big business and the likes of Bono, aims to end extreme world poverty by 2030.

Organisers of its festival say the event, which was timed to coincide with the UN's Global Goals, which replace the Millennium Development Goals, differs because it is not looking for people's money, but their time instead. To enter a draw for a ticket to the free event, concertgoers had to complete "an action journey" - write to politicians, post on Twitter, etc. Some 60,000 people were chosen and the day-long event was their reward.