Homely Scientist

Remember me talking about wind-power hitting a tipping point and how solar was almost there?  In a case of news almost made to order is this bit of news:
The University of Delaware has inched up the record for solar cell efficiency with a new device that can convert 42.8 percent of the light that strikes it into electricity.
That beats the old record of 40.7 percent hit in December. The Defense Advanced Research Projects Agency, or DARPA, has been funding research to get efficiency up to 50 percent.
The cell, created by Christina Honsberg and Allan Barnett of UD, splits incoming light …read more

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Nice to start off the week with some good news:
The wind power industry made big strides last year, according to a Worldwatch Institute report released late Thursday.
15,200 megawatts of new wind turbines were installed around the world last year, representing a 26 percent jump in global wind power capacity, according to the study.
By year’s end, total wind power capacity exceeded 74,200 megawatts, enough to offset 43 million tons of carbon dioxide, the institute said. Source:Study: Wind power soared in 2006 | Tech news blog – CNET News.com

Large-scale deployment and adoption of any alternative energy is the key.  Once it hits …read more

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 Microsoft is in the midst of building a new data centre.  Building, of course, means trucks and in this case trucks of cement.  One problem, when those trucks use petroleum diesel, they spew all kinds of garbage into the air.  Those chemicals and particles aren’t just bad for the planet in the long term they are bad for people in the short term.  Solution to the potential workplace hazard?  Biodiesel!
The construction company working on the new data centers approached Steve Verhey, the chief executive of Central Washington Biodiesel, with a problem earlier this year, he said. The company had built …read more

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 Okay raise your hand, who hates bugs?  Yeah I figure everyone’s hands went up.  I’m not fearful of bugs (much), and am often called on for insect removal duty, but mosquitoes, yellow jackets, and flies are certainly pests we all would like to keep at bay.  In the segment below talks about Ultrafobos which is supposed to emit sounds from your computer speakers that will repell bugs (and other animals as well)…more after the jump..

 Seems like this could work.  Sound is a very powerful thing.  Sound waves can destroy buildings, glass, and if your a parent of teenagers, drive you batty.  …read more

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 In the Andes, the Incas and modern-day descendents have been gathering water from the fog for centuries.  The process there is simple, the fog hits some kind of cloth or sheeting and the water condenses on it.   Then the water collects and rolls down into a container.  These work amazingly well, but they are also huge and need pretty heavy fog to work well.  Max Whisson has taken the idea that there is always (pretty much) water in the air and uses condensation to make a water gathering machine:
There’s a lot of water floating around in the air everywhere, and …read more

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First this is one of my favourite songs:

Maybe it isn’t as easy as I make it out to be, but in honour of today’s SciHealth Theme day, which is being Green, here are some of the easiest ways to be Green(er):

Recycle
Use compact florescent bulbs
Turn off lights (even ones with CF bulbs) when not in use
Unplug cell phones, etc when they are done charging (they are still drawing current)
Use low-flow shower heads and sink aerators
Turn down your water heater
Change the oil in your car
Keep your tires inflated (yep this really does help to save fuel)
Walk/Bike more – drive less
By used from …read more

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How would you like to have a device that generates electricity just from the vibrations that are all around us?  How about if this device were smaller enough to be used in lots of small devices?  Making things like wireless transmitters small, cheap, and self-powered?  It’s a reality now:
The trick with this generator is efficiency: Its vibrating magnets are 10 times better at generating current than other machines of this sort. The obvious use for this is in wireless sensors, that currently use batteries that need to be replaced, and therefore must be located in accessible spots. With a vibration …read more

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Need a daily dose of ideas to help save energy (and the planet…but that is such a huge concept, too distant for many…stick to stuff closer to home and you)?  Check out LiveEarth’s Twitter feed:
Shading windows. It can lower your home’s temperature and reduce your cooling costs by 30%. Source: Twitter / LiveEarth070707
This tip is especially good right now as the hottest part of the summer is coming our way in the Northern Hemisphere (the Dog Day … which are named such because Sirius the Dog Star become visible this time of year).  Another great one is to put a …read more

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Insulating buildings is one of the most important aspects of the building process.  Insulation not only has to, well, insulate, but it also has to not grow nasty things and last for a long time (who wanted to rip open all their outside walls every few years–if ever).  Insulation, which is typically fiberglass now, does take resources to make and isn’t recyclable (although it is made from recycled glass).  Now, what if you could grow insulation?  Yeah, grow.  Couple smart guys figured out how to make a growing medium for oyster mushroom spores that could become suitable insulation material:
Placed in …read more

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