This week's Question: A report released last week in London and addressed at the U.N. climate conference in South Africa said that reflecting a small amount of sunlight back into space before it strikes the Earth's surface would theoretically have an immediate effect on the...

Stanford researchers have developed a new battery electrode that employs crystalline nanoparticles of a copper compound. In laboratory tests, the electrode survived 40,000 cycles of charging and discharging, after which it could still be charged to more than 80 percent of its original charge...

The gallium nitride nanowires grown by NIST Physical Measurement Laboratory scientists measure only a few tenths of a micrometer in diameter, but they promise a very wide range of applications, from new light-emitting diodes and diode lasers to ultra-small resonators, chemical sensors, and highly...

Without supplementary IR lighting, the M6-200 IP video camera from Scallop Imaging (Boston, MA) delivers up to 0.005 lux low-light performance. The six-megapixel M6-200 video surveillance camera uses five monochrome 1.2-megapixel image sensors, combined with f/1.7 optics.