We live on a planet whose surface is 71 percent water. But less than 3 percent is freshwater, and most of that is not available for human use.
On Saturday, Oct. 14, three engineers gave a public presentation in Rapid City. They call for conservation and preservation of the tiny percentage of Earth's water that is available.
One of the engineers is Mark Anderson, adjunct professor at the South Dakota School of Mines and Technology and former director of the U.S. Geological Survey's Dakota Water Science Center.