You may have already seen this... it's a powerful speech.

Severn Suzuki speaking on behalf of The Environmental Children's Organisation (ECO)
YouTube - Girl Who Silenced the UN For 5 Minutes (http://www.youtube.com/watch?v=6Sb6RmRMbBY)

I have to say, I generally don't pay attention to things like global warming or anything that has to do with the UN... But I found that speech incredibly powerful.

Yes, those few children meant every word of what was said and put so much effort into getting their message across to the world.