EARTHSC 2WW3 Lecture Notes - Lecture 10: Water Scarcity, Greywater, Virtual Water
25 Dec 2015
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Document Summary
A little about the future of water. The value of an economic resource: value needs to be recognized, a value needs to be demonstrated, values then needs to be embedded into decision making. Unlike oil and orange juice water scarcity doesn"t correspond directly to increased prices: water as an economic good. Consumers take low price to be equivalent to the true value. If it doesn"t cost anything, it isn"t worth anything: pricing water. Water footprint: most consumption from green water footprint, intensively manufactured products use blue and/or grey water. Blue water use water as its natural state (irrigation) Even if some countries have low water use per capita, they could still have a great toal water footprint (ie. india) We export a lot of water to other countries ( virtual water") Large mass of solid debris floating in the pacific ocean. Located within the north pacific subtropical high, an area between hawaii and. Estimated to be the same size as texas.
