I'm not sure what you mean by how is does so: are you looking for a scientific explanation about how global warming gases let sunlight through the atmosphere but stop reflected light (heat) from bouncing back to outer space? Or how will warming be devastating: hurricanes, crop failures, species extinctions, tropical diseases expanding, coastal and island flooding as ice melts and oceans rise, deserts expanding, changing weather patterns causing mass migration with flooding in some places and droughts in others, and most of all, surprises. Its not only the global warming....our economy will destroy much more if we don t change the rules. depending the global warming... our Clima is a fragile balance...only a few parameters changed..and perhaps we drive into a complete changing of this system.
Its similar too the effect, when you mix some colours ....there is a point when all is getting black...and...black is no colour. but the peoples who drive the economical system at the moment only think in terms of fast profit, they NEVER take any responsibility which results that may cause!!!! So: WE HAVE TO CHANGE THE RULES! ozone layer depletion is the straight answer for