 Boeing recently announced that their new 787 jet assembly plant in South Carolina will be completely powered by renewable energy. The new facility will have a roof covered with solar panels that will provide most of the energy they need for operations, and they will supplement this energy source with renewable energy certificates bought from SCE&G. The solar array will be made up of 18,000 solar panels, will produce 2.6 megawatts of power, and will cover a whopping 10 acres of rooftop.
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 Visitors look at a model of the Tiangong-1 space station. Less than a decade ago, it fired its first human being into orbit. Now, Beijing is working on a multi-capsule outpost in space. But what is the political message of the Tiangong 'heavenly palace'?
China laid out plans for its future in space yesterday, unveiling details of an ambitious new space station to be built in orbit within a decade. The project, which one NASA adviser describes as a "potent political symbol", is the latest phase in China's rapidly developing space program. It is less than a decade since China put a human into orbit for the first time, and three years since its first spacewalk.  1953: James Watson and Francis Crick present their research in Nature, describing the architecture of the double helix, which forms the molecular structure of DNA.
Although by then scientists understood that deoxyribonucleic acid was most likely the molecule of life, absolute certainty eluded them, because key components were still missing. Chiefly, they didn’t really know what the DNA molecule looked like. Many, among them Linus Pauling, were actively engaged in DNA research and a number of structural theories were advanced, all of them wrong in varying degrees. When Watson and Crick finally solved the puzzle, the key was provided by an X-ray diffraction photograph of a DNA molecule — the so-called “photograph 51” — taken by another researcher, Rosalind Franklin.  For California resident Maira Khan, an oceanside photo opp almost turned into tragedy.
Khan and her friend had climbed a set of rocks that stretch out into the ocean. Just as her friend looked down to adjust her camera, a set of six-foot waves started rolling in, the Orange County Register reports. Suddenly, Khan, who can't swim, found herself hanging off the rocks. Luckily James Pribram -- a pro surfer who originally learned the sport in that same spot -- happened to be sitting on his parents' balcony looking out at the ocean. He yelled to his mother to call 911 and ran toward Khan as she was being swept away among the rocks and the reef.  Stanford researchers have developed a battery that takes advantage of the difference in salinity between freshwater and seawater to produce electricity.
Anywhere freshwater enters the sea, such as river mouths or estuaries, could be potential sites for a power plant using such a battery, said Yi Cui, associate professor of materials science and engineering, who led the research team. The theoretical limiting factor, he said, is the amount of freshwater available. "We actually have an infinite amount of ocean water; unfortunately we don't have an infinite amount of freshwater," he said. As an indicator of the battery's potential for producing power, Cui's team calculated that if all the world's rivers were put to use, their batteries could supply about 2 terawatts of electricity annually -- that's roughly 13 percent of the world's current energy consumption. |
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