Global Development

Solar Water Disinfection

A billion people drink highly polluted water. Treating water by putting it in 2 liter cola bottles and setting it in the sun on a black surface for 5 hours kills 99% of pathogens. One of the world's truly great ideas. See http://www.sodis.ch

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Environment

Reinvent the Toilet

Gates Foundation chooses three winning designs in their "reinvent the toilet" competition. Economist http://econ.st/QGO6s7

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Health

Drink Tap Water

Tap water is subject to tighter government control than bottled water, and comes without the environmentally harmful bottle. Fortune Magazine http://bit.ly/d4Pb5r

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Environment

Cheap Desalination

New desalination technique uses evaporation and concentration gradients to produce potable water at 1/4 the energy of traditional desalination. http://ow.ly/zndp

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Global Development

Water "Tarpaulin" Combines Transport, Purification

The Solar Water Disinfecting Tarpaulin (SWDT) combines easy transport of water with solar purification. A Metropolis Magazine winning idea 2008. http://bit.ly/4tpQvv

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Global Development

Cheap Water Purification

The "Slingshot", Dean Kamen's latest invention, purifies just about any source of water - but it is still too expensive. http://ow.ly/p53F

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Environment

Build your own glacier

Civil engineers in northern India build canals, slow streams in shaded areas, and create overflows in order to build glaciers. The runoff then feeds crops downstream. Economist http://econ.st/1afck3G

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Environment

Use Graphene to Desalinate Water

Researchers are using graphene for effective water desalination. Economist http://econ.st/14c09zt

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Environment

Don't Drink Water from Fiji

Why is drinking bottled water shipped from halfway around the world considered cool? Isn't it absurdly wasteful? Mother Jones http://bit.ly/arjT5P

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Environment

Portable Wind Generator

Portable wind generator is useful in remote areas or during emergencies.http://bit.ly/5o700p

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Environment

Fight Water Shortages Through Appropriate Pricing

Water shortages in most contexts are exacerbated by very distorted pricing. Forbes http://ow.ly/OshT

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Global Development

Solar-powered Water Purification

The SunSpring produces 5000 gallons per day of potable water, powered by the sun. Units now at work in Haiti. FastCompany http://bit.ly/byk8Eu

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