ACTIVIST Bob Geldof has predicted a "mass-extinction" event on Earth in the near future.
The Boomtown Rat said that his generation had "failed disgracefully" and had left the world in a "very fraught" situation for young people.
Geldof was speaking at the opening ceremony of the One Young World summit in Johannesburg.
He told delegates from 190 nations, including 12 from Ireland, that entire countries will be wiped out unless people start thinking as "human".
"There will be a mass-extinction event. This could well happen on your watch. All the signs are there that it will happen and it will happen soon," he said.
"We need to be a little more human, less Irish, less British, less Cameroonian, less South African, less Russian, less Chinese and more human."
Geldof, who will be 62 on Saturday, finished his speech by apologising for being "so bloody miserable as usual".
However, referring to climate change he added: "Last week in a report that was vaguely noticed, the scientist of the world said we might not make it to 2030."
The singer spoke at the ceremony in FNB Stadium after former UN General Secretary Kofi Annan and Nobel laureate Mohammad Yunus predicted a bright future for the next generation.
Mr Annan said One Young World was a way for the world's youth to bring "voices together so that even the political leaders with the hardest hearing can't miss what you say".
And Mr Yunus predicted that by 2030 poverty could be eradicated.
"There will be big museums to show the poverty, to tell people what poverty used to be like," he said.
However, Geldof stunned the audience, including around 7,000 South African schoolchildren, saying that by 2030 "some of the nations that arrived here so proudly will not be there to meet us".
The annual event, which is second only to the Olympic Games in terms of bringing the largest number of young people together in one place, will take place in Dublin next year.