Geoengineering, the use of human technologies to alter the Earth's climate system—such as injecting reflective particles into the upper atmosphere to scatter incoming sunlight back to space—has emerged as a potentially ...
Environment
Mar 14, 2013
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(Phys.org)—Exciting the atoms or molecules of a substance via the use of visible light, or photoexcitation, can play a significant role in a range of energy-conversion processes, such as natural photosynthesis (oxygen from ...
General Physics
Feb 11, 2013
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(Phys.org)—In the first-ever experiment of its kind, researchers have demonstrated that clean energy hydrogen can be produced from water splitting by using very small metal particles that are exposed to sunlight. In the ...
Materials Science
Nov 21, 2012
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(Phys.org)—A few large particles in a crowd of tiny ones have often been ignored when calculating the amount of sunlight bounced back into space in clean-sky conditions. Scientists at Pacific Northwest National Laboratory ...
Earth Sciences
Nov 7, 2012
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(Phys.org)—As prices for solar panels continue to fall, those looking to make money selling large arrays have increasingly been turning their attention to the physical infrastructure that supports the panels. To keep the ...
Even though it sounds like science fiction, researchers are taking a second look at a controversial idea that uses futuristic ships to shoot salt water high into the sky over the oceans, creating clouds that reflect sunlight ...
Earth Sciences
Aug 20, 2012
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(Phys.org) -- A new versatile measurement system devised by researchers at the National Institute of Standards and Technology (NIST) accurately and quickly measures the electric power output of solar energy devices, capabilities ...
Optics & Photonics
Jul 26, 2012
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A University of Saskatchewan-led international research team has discovered that aerosols from relatively small volcanic eruptions can be boosted into the high atmosphere by weather systems such as monsoons, where they can ...
Earth Sciences
Jul 5, 2012
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New research led by chemists in the Baruch '60 Center for Biochemical Solar Energy Research at Rensselaer Polytechnic Institute is seeking to detail the individual steps of highly efficient reactions that convert sunlight ...
Biochemistry
Jul 2, 2012
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(Phys.org) -- The dramatic melt-off of Arctic sea ice due to climate change is hitting closer to home than millions of Americans might think. That's because melting Arctic sea ice can trigger a domino effect leading to increased ...
Earth Sciences
Jun 6, 2012
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