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Water

— Outdoors

SteriPen's UVR tech amplifies UV rays to speed up water purification

There are many ways to filter and purify water out in the wild, the MSR Guardian and Oasis being a couple of the most recent we've looked at. Since 1999, Hydro-Photon has gone with ultraviolet light, offering lightweight, compact SteriPen purifiers that quickly zap away microorganisms. With its new Ultraviolet Reflection (UVR) technology, it makes the UV purification process even faster, so outdoor enthusiasts can get clean water more efficiently than ever.

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— Space

Rosetta confirms the presence of water ice deposits on the surface of comet 67P

New analysis of data collected by ESA's Rosetta orbiter has revealed significant quantities of water ice on the comet 67P/Churyumov–Gerasimenko (67P). While the presence of water had previously been observed on 67P both in the comet's coma, and as frost on the surface, this discovery represents the first time that a surface deposit of water ice has ever been definitively confirmed on the comet.

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— Around The Home

Connected shower head changes colors to highlight your water wastage

It can be pretty easy to lose sight of your water usage when taking a shower. Indeed standing under that powerful stream is a perfect way to churn through a lot of both water and energy. The team behind Hydrao is aiming to build awareness around these important resources, with an LED-equipped shower head that changes color when you're overstaying your welcome.

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— Environment

Cheap, waterless toilet that turns waste into clean water and power to be trialed in Africa

A cheap, easy to maintain, "green" toilet that uses no water and turns human waste into electricity and clean water will be trialed in 2016, possibly in Ghana. Dubbed the "Nano Membrane Toilet" by its creators from Cranfield University, UK, this new approach to managing waste could help some of the world's 2.3 billion people who have no access to safe, hygienic toilets.


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— Materials

Nanometer-thick membrane a new contender in the quest for more efficient desalination

Engineers from the University of Illinois have used nanotechnology to model a new membrane that can filter salt from seawater at higher volumes than ever before. The membrane is made from a nanometer-thin layer of molybdenum disulfide (MoS2) studded with tiny holes called nanopores. By "pulling" clean water through itself while filtering out salt and other compounds, the membrane has the potential to make desalination plants much more energy-efficient.

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— Environment

New desalination technique pushes salt to one side with shockwaves

As access to clean water continues to be an issue throughout the developing world, there's an increased demand for easier ways to turn contaminated and salty water into something you can drink. Researchers at MIT may have found a solution using a method they are calling shock electrodialysis. It uses electric shock waves to separate contaminated or salty water into two separate streams, with a natural barrier between each one.

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