Here is a little experiment you can do at your own time and conviniance and at your home; fill a glass of water up to about 3/4, then add ice cubes, just so it doesn’t overflow. Put at the sun light and let the ice cubes melt. As they melt you should be able to measure how much the level of the water have changed. In your home you should be able to determine who is telling you the truth about Global Warming. A little, simple applied physics.