UN slams Nigeria over oil pollution

ABUJA, Nigeria - Decades of oil pollution in Nigeria's Ogoniland region may require the world's biggest ever clean-up, the UN environmental agency said on Thursday as it released a landmark report on the issue.

The United Nations Environment Programme (UNEP) also called for the oil industry and the Nigerian government to contribute $1 billion to a clean-up fund for the region that activists say has been devastated by pollution.

Restoration of the region could take up to 30 years, UNEP said.