Happy Indian Republic Day
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As Earth Day approaches, we should all ponder as to how we can help save the earth. And one of the biggest problems our planet is facing today is water shortage. The Earth?s surface is 75% water ? that?s why it`s called the blue planet. However, only about 1% of this water is freshwater ? water that is available for our daily needs.
An editorial in Nature last month gives the following food (or shall we say – drink?) for thought:
Over a billion people in this planet do not have access to safe drinking water.
One of the biggest users of freshwater is the agricultural industry. However, it?s not crops that need the most water, it?s actually livestock. To produce 1 kg of wheat, we need about 1550 liters of water; to produce 1 kg of industrial of beef, we need about 10 times as much.
Another big water user are the energy providers. The US uses more than 500 billion liters of freshwater water each day for to cool down electric power plants.
By 2050, about 12,000 cubic kilometers of water will be required to feed the world’s growing population. This is equivalent to amount of water in Lake Superior.
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