WATER

Alternet: The Battle for Water

We are taught in school that the Earth has a closed hydrologic system; water is continually being recycled through rain and evaporation and none of it leaves the planet's atmosphere. Not only is there the same amount of water on the Earth today as there was at the creation of the planet, it's the same water. The next time you're walking in the rain, stop and think that some of the water falling on you ran through the blood of dinosaurs or swelled the tears of children who lived thousands of years ago.