More sophisticated cameras. Security robots. Customers feeling shaken by recent attacks at U.S. malls may not notice huge changes—but mall operators are testing and putting in place new technologies and other measures to ...
Business
Sep 30, 2016
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8
How can solar energy be stored so that it can be available any time, day or night, when the sun shining or not? EPFL scientists are developing a technology that can transform light energy into a clean fuel that has a neutral ...
Optics & Photonics
Nov 11, 2012
8
1
(Phys.org)—Exoplanet hunters estimate that there could be billions of super-Earths—planets with a mass of up to ten times that of Earth—orbiting stars in the Milky Way alone. But do super-Earths really deserve their ...
Astronomy
Sep 25, 2012
27
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Conventional wisdom would say that blocking a hole would prevent light from going through it, but Princeton University engineers have discovered the opposite to be true. A research team has found that placing a metal cap ...
Optics & Photonics
Nov 22, 2011
25
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The Earth's magnetic field has reversed many times at an irregular rate throughout its history. Long periods without reversal have been interspersed with eras of frequent reversals. What is the reason for these reversals ...
Earth Sciences
Oct 24, 2011
19
2
It's easy to be a pessimist in a world full of calamities. But for those worried about the continuing availability of natural resources, data from the ocean makes a good case for optimism, says economic geologist Lawrence ...
Earth Sciences
Oct 7, 2010
18
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