Achim Steiner – Executive Director of UNEP was the guest speaker at this year’s World Challenge awards ceremony. In his engaging speech he commented on the challenges facing this month’s Climate Change summit in Copenhagen and welcomed the winners of this year’s competition.

Now in its fifth year, World Challenge 09 is a global competition aimed at finding projects or small businesses from around the world that have shown enterprise and innovation at a grass roots level. World Challenge 09 is brought to you by BBC World News and Newsweek, in association with Shell, and is about championing and rewarding projects and business which really make a difference.