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Water

According to the designers, they have produced and flown a scale prototype of the blimp

Using a tethered airship floating high up amongst the clouds, the Air HES concept claims to yield both clean water and electricity by harvesting and condensing water vapor which it uses to spin up an electric turbine generator to create power. According to the creators, they have built a prototype to test their theory and have also conducted feasibility studies into upping the scale of their device to produce economically viable levels of water and power.  Read More

The Stanford University water splitter could save hydrogen producers billions of dollars (...

A new emissions-free device created by scientists at Stanford University uses an ordinary 1.5-volt battery to split water into hydrogen and oxygen at room temperature, potentially providing a low-cost method to power fuel cells in zero-emissions vehicles and buildings.  Read More

The Naturbad Riehen swimming pool is entirely chemical-free (Photo: Helen Schneider)

A whiff of chlorine is virtually synonymous with taking a dip in a swimming pool. While it helps to kill off bacteria, it also serves as a subtle reminder that you are wading around in chemically treated water (if tasting the odd mouthful just isn't enough). Switzerland's Naturbad Riehen swimming pool is entirely chemical-free, relying instead on a biological filter system to provide clean and natural water for thousands of patrons, no itchy red eyes in sight.  Read More

Dr. Horst Punzmann and team leader Prof. Michael Shats, at the ANU wave tank

If you've ever tried to retrieve an object that's floating away in a lake or the ocean, then you'll know how frustrating it can be, trying to draw that item towards you. According to research recently conducted at The Australian National University (ANU), however, it's possible to move such objects in whichever direction you wish – as long as you can generate the right type of waves.  Read More

A microscope cross-sectional view of the material, in which the microhairs are standing st...

What if your house's windows could automatically reduce the amount of hot sunlight passing through them, or your car's windshield could cause rain droplets to bead off to its edges? These things and more could soon be possible, thanks to a new animal hair-inspired material developed at MIT.  Read More

Jeremy Nussbaumer with the DrinkPure filter

It's no secret that hundreds of millions of people around the world have little or no access to drinkable water. While a number of projects are aimed at getting filtration systems to those people, many of those systems require electricity, contain costly materials such as silver, or treat the water at a slow rate. The low-cost DrinkPure filter, by contrast, is simply screwed onto the top of an existing bottle, and can purify approximately one liter (34 fl oz) of water per minute.  Read More

Inventor Josh Malone claims that it's possible to fill 100 Bunch O Balloons every minute

Making a water bomb (or water balloon) can be a laborious and time-consuming process. Unless you have Bunch O Balloons, a system for filling 100 balloons with water in under a minute.  Read More

The BioSkin that coats the NBF Osaki Building in Tokyo integrates evaporative cooling to k...

The urban heat island effect, whereby the high concentration of heat-retaining concrete and bitumen causes metropolitan centers to be significantly warmer than the rural areas surrounding them, is a common problem around the world. The phenomenon is particularly prevalent in Tokyo, Japan, but among the sea of towering structures stands one beacon of hope. The BioSkin that coats the NBF Osaki Building integrates evaporative cooling to keep its surface temperature down and could inspire new solutions to rising city temperatures across the globe.  Read More

The Aussietank should take no more than 20 minutes to unpack and assemble

Learning from Australia’s arid climate and recent struggles with drought, the Aussietank was developed to aid households in times of dry periods and water restrictions. The collapsible and portable water tank comes flat-packed in three different sizes and has recently become available to the USA market. It could help households hit by the North American drought to harvest water without the expense of permanent water tank installation.  Read More

The EcoDrain uses outgoing hot water to heat incoming cold water

Generally-speaking, when there's something that we're trying to conserve, we don't just put it down the drain. For those of us who are trying to save power, however, that's just what happens when we let hot water from our showers or baths run straight into the sewer. The EcoDrain is made to address that problem, via a unique design that allows outgoing hot water to warm up incoming cold water.  Read More

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