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Outdoors

Portable Hotaru shower applies pressure on the road

Portable showers, like this car-mounted version, have been around for some time, but they have a couple of disadvantages. First, their reservoir tanks can only hold a limited amount of water. Second, the pressure in most portable showers tends to be pretty feeble, as they usually rely on gravity for water flow. The Hotaru shower exhibited this week at SXSW tackles both problems, providing plenty of water pressure and reusing the same water for weeks at a time.Read More

Environment

Low-cost air filter could help Beijing breathe easy

Material scientists at Stanford University have developed a highly effective semitransparent air filter that can collect 99 percent of the very small PM2.5 particles, considered the most harmful to the human respiratory tract. The low-cost filters, which don’t require power to function, could be used to build better protective facemasks, window screens, filtration systems in hospitals, and perhaps even to reduce pollution from cars and industrial smoke stacks. Read More

How to build a "stealth" computer display

An additional layer of security (and fun) can be added to your computer's LCD display by following the lead of Brusspup, a well-known online illusionist and computer artist. Just remove your display's outer polarizing filter, and use polarizing sunglasses instead.Read More

Good Thinking

Sweat Machine turns perspiration into drinking water

Unicef called upon the services of engineer Andreas Hammar to build the provocatively-named Sweat Machine which purifies sweat into drinking water. Though not intended as a serious measure to tackle shortages in drinking water, Unicef does hope to raise awareness of the issue, and invited visitors and footballers at last week's Gothia Cup soccer tournament to partake of a glass.Read More

Outdoors

NDūR Survival Straw purifies water while you drink

Most of us take water for granted. If we want a drink, we turn a tap or twist a cap and there it is. But if you find yourself off the beaten track in triple-digit heat without it, locating some can mean the difference between life and death. Finding a pool of water in the shade of a rock may seem like a godsend, but then the question of waterborne diseases raises its head. That’s where the NDūR Survival Straw comes in. Read More

Outdoors

Camelbak All Clear Bottle zaps bacteria with UV rays

When you're dealing with the impurities of your local city water supply, a Brita filter should be enough to give you clean-tasting water. But when you're dealing with the impurities lingering in a raw, untreated stream in the woods, you'll need something stronger. This solution from Camelbak - the All Clear bottle - gives you an integrated UV purifier designed to kill all those nasty microorganisms that just live to wring your intestines out.Read More

Around The Home

Rydis rolls in with a robot air purifier

An air purifier is typically set to clean a set number of square feet in a house or building, say 100 square feet (9 sq m). That means nearby rooms don't benefit, and you may even wonder about the perimeter of the room in which you have the purifier, and whether air particles in that area are being cleaned. The Rydis H800, a robot air purifier from Moneual, addresses these concerns by roaming the house in search of dirty air to clean and purify.Read More

Science

Prototype system removes air pollutants and generates heat for livestock barns

If you’ve ever so much as stepped into a chicken or swine barn, you’ll know that they can be very, very smelly places. When vented outdoors, the air from these buildings does more than just make the area stink – it can actually be a major source of air pollution and greenhouse gases. Fortunately, however, researchers from North Carolina State University and West Virginia University have created a system that not only helps clean the air going out of the barns, but it heats up the air coming in from outside.Read More

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