The Water Cycle

The Water Crisis in Flint, MichiganThanks to strict regulations imposed by the US Environmental and Protection Agency, clean tap water is something Americans take for granted. But such is not the case for the residents of Flint, Michigan. Their water supply is so tainted that President Obama declared a federal state of emergency in Flint releasing up to $5 million USD to help the city combat what is probably one of the biggest public health crisis of recent times.

Graphene Sieve May Help Solve The World's Water WoesThough 70% of the Earth is covered in water, only about 2.5% is fresh. Even worse, only 1% of the fresh water is readily accessible, the rest being trapped in glaciers or deep underground. It is therefore not surprising to hear that over 780 million people worldwide currently do not have easy access to clean water. The problems are only expected to get worse with climate change and the burgeoning world population. Though desalinating sea water is the most logical solution, current techniques are too expensive and cumbersome to deploy on a large scale.

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