TechnologyWork light twice as hard to make cheap solar cells The most energetic photons hitting a solar cell pack enough of a punch to free up two electrons, rather than the usual one, and generate more current ¿ìè¶ÌÊÓÆµ
TechnologyOil company to build longest floating vessel ever Shell's proposed 468-metre floating liquefied natural gas plant will extract and process gas off the coast of Australia ¿ìè¶ÌÊÓÆµ