What Dry Ice Is
	Dry ice is basically frozen carbon dioxide. It might not sound like much but dry ice bears some unique properties that make it ideal for certain cooling applications. First of all, as its name says, it’s dry, meaning that unlike other ices, such as frozen water, it does not go through a liquid state when heated. More precisely, when frozen, carbon dioxide breaks down, the process being called sublimation, a transformation from the solid st ... [read more >>]
	09 May 2008, 08:33GMT | (c) 2008 Softpedia

How to Make Your Own Rain
	If the Rain Dancing ceremony suddenly doesn't work for you anymore, you might consider using a cloud seeding technique to bring back the rain. Cloud seeding represents a form of weather modification, in the attempt to change the amount or type of precipitation that falls from the clouds, by spreading substances in them that will serve as cloud condensation of ice nuclei. The usual purpose of cloud seeding is to increase or to trigg ... [read more >>]
	15 November 2007, 10:43GMT | (c) 2008 Softpedia