Rio+20 concludes with $513 billion in sustainable development commitmentsListen /
Representatives from the UN member states arrived in Brazil nearly two weeks ago with a simple charge from Sha Zukang, the Secretary-General of the Rio+20 conference.
He told them "Come to Rio, ready to commit."
On Friday evening, world leaders adopted the final outcome document, bringing to a close the largest conference in UN history.
Dianne Penn reports.