Rio+20 wrapped up on Friday 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.

(Duration: 3'51)