purification
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Graphene film makes dirty water drinkable in a single step
Every year, millions of people around the world die from drinking unclean water. Now, researchers have developed a process that can purify water, no matter how dirty it is, in a single step. Scientists from Australian research organization CSIRO have created a filtration technique using a graphene film with microscopic nano-channels that lets water pass through, but stops pollutants. The process, called "Graphair", is so effective that water samples from Sydney Harbor were safe to drink after being treated.
Butlers, lunar rovers, snakes and airboats: the best of Carnegie Mellon's Robotics Institute
How was your week? We got to spend a couple of days trekking around the Carnegie Mellon campus in Pittsburgh, PA to check out some of the latest projects from the school's world renowned Robotics Institute -- a trip that culminated with the bi-annual induction ceremony from the CMU-sponsored Robot Hall of Fame. Given all the craziness of the past seven days, you might have missed some of the awesomeness, but fear not, we've got it all for you here in one handy place -- plus a couple of videos from the trip that we haven't shown you yet. Join us after the break to catch up.
AirBot and WaterBot help localize pollution data collection (video)
Want to do something about pollution in our water and air? Carnegie Mellon's CREATE Lab is working on a few interesting solutions to the problem of localizing pollution data with a trio of devices aimed at making the process accessible and affordable for regular people. First up is AirBot, a "particle counting robot" that monitors pollutants that can contribute to breathing problems like asthma. Aimed at a $99 price point, the little black boxes are portable enough to bring around with you, so you can, say, compare the air quality in areas when apartment hunting. The lab has made six prototype devices (one of which was on-hand during our visit), and is aiming to bring them to market next year. WaterBot, meanwhile, is set to bring the solution to streams near you. Stick one end in a body of water near your home and it will upload water purity information to the web via a built-in ZigBee module. CREATE's also cooked up the CATTFish, a method for recording such information in your home via, yes, your toilet. Dip one end in the reservoir and the box on top of the tank, and it will give you a reading of the cleanliness of the water being used to refill. That information can then be uploaded to the web via a USB port. The lab is shooting for a $50 price tag on the device. The big thing here is the ability to let the community take its own readings to build a bigger picture of water and are purity levels through online applications. More information on all of the above devices can be found in the video below.
Gates Foundation collaborates with Manchester University to develop potable toilet water
It's an unsettling thought, having to drink water from that bowl in your bathroom, but if the need ever arose, wouldn't you be glad to know it was clean and safe? Dr. Sarah Haigh, a researcher into the properties of nanomaterials at Manchester University, is currently pursuing this goal with a $100,000 grant from the Bill and Melinda Gates Foundation. With the help of nanomaterials and bacteria, Haigh believes that hydrogen can be easily extracted from not only the water, but human waste itself, which could then be processed into clean water. Should the system work effectively, Haigh stands to receive an additional $1,000,000 grant to further her research and develop inexpensive purification systems for use in nations without modern infrastructure. And you thought nothing worthwhile would come from purchasing Microsoft Office.
Totem Talk: Restoration gets buffed edition
Every week, WoW Insider brings you Totem Talk for elemental, enhancement and restoration shaman. Want to be a sultan of swing healing? A champion of Chain Heal? Totem Talk: Restoration, brought to you by Joe Perez (otherwise known as Lodur from World of Matticus and co-host of the Raid Warning podcast), shows you how. Last week, we talked about healing post patch 4.0.6. I shared with you my experiences healing after our initial tweaks, and you were kind enough to share your experiences as well. It was interesting to see how everyone is handling the changes and how their healing has changed, if at all. This week, I was going to go back into our normally scheduled posts, but as seems par for the course lately, Blizzard has seen fit to throw at us another set of changes. We're a healing class in flux right now, there is no denying it, and we're going to be going through a lot of changes in the weeks to come. Now, while Matt Low already discussed some of our changes and I've talked about it a bit elsewhere, I thought this week we could take some time and talk about it a little further and get your opinions on it from the one place it really counts: the shaman!
Melting silicon 'in reverse' can help purify it, result in cheaper electronics
Just our favorite combination of news: a mind-bending innovation that can have a very practical impact on our daily tech consumption. MIT scientists have found that silicon -- when combined in the right dosage with other metals -- can actually be made to melt by reducing its temperature. Typically, you'd require 1,414 degrees of Celsius heat to liquidize solid silicon, but the intermixed variant discussed here need only reach 900 degrees before its slow cooling process starts turning it gooey. The great advantage to this discovery is that because the impurities tend to separate off into the liquid part, there's now a practicable way to filter them out, meaning that things like solar cells won't require the same high grade of silicon purity for their construction -- which in turn might lead to us being able to afford them one day. Of course, that's getting way too far ahead of ourselves, as the research is still ongoing, but good news is good news no matter the timescale.
