Seth Siegel's book Let there be water: Israel's solution for a water-starved world caught me off guard. 

Water truly is the Elixir of life.  We are fortunate enough to have clean tap water and can even fuss over which type of bottled water to buy and whether it should contain added vitamins.  Others trudge miles to get a small bucket of water to use for everything.  Many more people drink dirty and contaminated water out of polluted creeks and river beds.   Why the disparity?  Who is responsible?  Who ca