Farming: Biggest threat to water

The Internation Water Forum is still meeting in Mexico City and tomorrow is World Water Day. Farming by far uses the most water and pollutes the most water on the planet. The UN says that ending subsidies for pesticides and fertilizers would help to curb some of the pollution. Some subsidies for more efficiente use of water would probably help to, if you ask me. Let's get rid of those giant sprinklers that waste more than 90% of the water than flows out of the them...