Ethiopia has begun diverting the Blue Nile as part of a giant dam project, officials said Wednesday, risking potential unease from downstream nations Sudan and Egypt.
Environment
May 29, 2013
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(Phys.org)—Although the LHC has often been called the largest machine in the world, that title may be more appropriately given to something much more familiar: power grids. Consisting of thousands of generators and substations ...
(Phys.org)—If you think it's been unusually hot lately, just wait—by the end of the century, temperatures in California are expected to rise significantly. What that means for human health, agriculture, water supply and ...
Environment
Dec 19, 2012
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The construction of what is to become Africa's biggest wind farm will start by June in an arid region of northern Kenya, the project's officials said on Saturday.
Energy & Green Tech
Mar 24, 2012
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Your smart phone uses broadband to connect you to the world. But when charging it, you're relying on an electrical system that was designed and built in the era of the rotary phone.
Energy & Green Tech
Feb 19, 2012
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Over the next two decades, the U.S. electric grid will face unprecedented technological challenges stemming from the growth of distributed and intermittent new energy sources such as solar and wind power, as well as an expected ...
Energy & Green Tech
Dec 5, 2011
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A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first ...
Condensed Matter
Nov 9, 2011
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Fuel cells seem like an ideal energy source -- they're clean, efficient, silent and don't require transmission lines. The hitch? They can be costly. Now scientists at Lawrence Berkeley National Laboratory (Berkeley Lab) hope ...
Energy & Green Tech
Nov 1, 2011
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(PhysOrg.com) -- By demonstrating that an artificial atom embedded in a transmission line can route a single photon from an input port to one of two output ports, physicists have built the first router working at the single-photon ...
A joint cooperation between three research groups at nanoGUNE reports an innovative method to focus infrared light with tapered transmission lines to nanometer-size dimensions. This device could trigger the development of ...
Optics & Photonics
Apr 4, 2011
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