This whole Global Warming and finding a way to combat it is simply a crock. Do you remember Krakatoa, 1883? - https://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa. Krakatoa threw so much "dust" and ash into the air that we had global cooling worldwide. Any time the Earth really does get too hot, all we need to do is nuke 2 or 3 of the big volcanoes, thereby causing them to erupt. Instant ice age if we aren't careful about it.