Before you start believing UN propaganda educate yourself on the UN and its history.

Here's a quote from a real scientist, Kary Mullis, whom has the integrity to stand up to the nonsense:
"The concept that human beings are capable of causing the planet to overheat or lose its ozone seems about as ridiculous as blaming the Magdalenian paintings for the last ice age. There is a notion that our emissions are causing the temperature of the planet to go up, even though the temperature is not going up. Even if the temperature were going up, we would be foolish to think we caused it. We could just as reasonably blame it on cows. In the nineteenth century the temperature went down. In this century it's gone up only about half a degree. The trend over the last two centuries is down. Down is not warmer. So if you like to worry, worry that we might be moving into a new ice age. We could be."

I guess he doesn't get his data from the UN.