14 May 2012
This image courtesy of the USGS:
Virtually all of that blue blob is salt water and not drinkable. Only 2.5% of that blue marble of water s fresh and 70% of that 2.5% is frozen ice in Greenland, Antarctica, or on high mountaintops. Only .007% of Earth’s water is easily accessible for humans, a fact that I made much of when taught two semesters of Environmental Science.
Without doubt, drinking water will be the story of the next century. Want some more surprising facts- go here.