From left to right: German Chancellor Angela Merkel, Secretary-General Ban Ki-moon and U2 singer and activist Bono. Photo: Francyne Harrigan

From left to right: German Chancellor Angela Merkel, Secretary-General Ban Ki-moon, U2 singer and activist Bono, Sir Mark Moody-Stuart and Executive Director of OXFAM International Winnie Byanyima at the Private Sector Forum. Photo: Francyne Harrigan

Education First High Level event:  (from the left): Mrs. Ban, HE Peng Liyuan, First Lady of the People's Republic of China, President of the Republic of Korea Park Geun-hye, Director-General of UNESCO, Irina Bokova, and Nobel Peace Prize Laureate Malala Yusufzai.

Education First High Level event: (from the left): Mrs. Ban Soon-taek, First Lady of the People’s Republic of China Mrs. Peng Liyuan, President of the Republic of Korea Park Geun-hye, Director-General of UNESCO Irina Bokova, and Nobel Peace Prize Laureate Malala Yusufzai.

Mark Zuckerberg (centre), CEO of Facebook Inc., addresses the interactive dialogue of the Summit for the adoption of the post-2015 development agenda, “Fostering sustainable economic growth, transformation and promoting sustainable consumption and protection”, held at UN Headquarters. UN Photo: Mark Garten

Mark Zuckerberg (centre), CEO of Facebook Inc., addresses the interactive dialogue of the Summit for the adoption of the post-2015 development agenda, “Fostering sustainable economic growth, transformation and promoting sustainable consumption and protection”, held at UN Headquarters. UN Photo: Mark Garten

Ahmad Alhendawi, Secretary-General’s Special Envoy on Youth, speaks during an event on “Mobilizing Generation Zero Hunger”. The event was co-organized by the Permanent Mission of Ireland, the Office of the Envoy of the Secretary-General on Youth, the Food and Agriculture Organization of the United Nations (FAO), the International Fund for Agricultural Development (IFAD) and the World Food Programme (WFP). UN Photo/Cia Pak

Ahmad Alhendawi, Secretary-General’s Special Envoy on Youth, speaks during an event on “Mobilizing Generation Zero Hunger”. The event was co-organized by the Permanent Mission of Ireland, the Office of the Envoy of the Secretary-General on Youth, the Food and Agriculture Organization of the United Nations (FAO), the International Fund for Agricultural Development (IFAD) and the World Food Programme (WFP). UN Photo/Cia Pak

Renowned Chinese pianist Lang Lang takes a selfie on the twitter mirror to show his support for the Sustainable Development Goals.

Renowned Chinese pianist Lang Lang takes a selfie on the twitter mirror to show his support for the Sustainable Development Goals.

Kaká, football player and World Food Programme Ambassador Against Hunger, speaks during an event on “Mobilizing Generation Zero Hunger”. The event was co-organized by the Permanent Mission of Ireland, the Office of the Envoy of the Secretary-General on Youth, the Food and Agriculture Organization of the United Nations (FAO), the International Fund for Agricultural Development (IFAD) and the World Food Programme (WFP). UN Photo/Cia Pal

Kaká, football player and World Food Programme Ambassador Against Hunger, speaks during an event on “Mobilizing Generation Zero Hunger”. The event was co-organized by the Permanent Mission of Ireland, the Office of the Envoy of the Secretary-General on Youth, the Food and Agriculture Organization of the United Nations (FAO), the International Fund for Agricultural Development (IFAD) and the World Food Programme (WFP). UN Photo/Cia Pal

People at the Global Citizen Concert show their support for the Sustainable Development Goals.

People at the Global Citizen Concert show their support for the Sustainable Development Goals.