![]() 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.
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![]() 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. ![]() I'm standing next to a Croatian-born American genius in a half-empty office in Watertown, Massachusetts, and I'm about to be fried to a crisp. Or I'm about to witness the greatest advance in electrical science in a hundred years. Maybe both. Either way, all I can think of is my electrician, Billy Sullivan. Sullivan has 11 tattoos and a voice marinated in Jack Daniels. During my recent home renovation, he roared at me when I got too close to his open electrical panel: "I'm the Juice Man!" he shouted. "Stay the hell away from my juice!" He was right. Only gods mess with electrons. Only a fool would shoot them into the air. And yet, I'm in a conference room with a scientist who is going to let 120 volts fly out of the wall, on purpose. "Don't worry," says the MIT assistant professor and a 2008 MacArthur genius-grant winner, Marin Soljacic (pronounced SOLE-ya-cheech), who designed the box he's about to turn on. "You will be okay." ![]() In this series of articles we examine several “Free Energy” devices and explain their workings in a very simplified way while discussing the proposed theories behind them. Also, we will take a look at the new inventors and researchers working within the Open Source Energy movement and how Internet collaboration has changed the face of invention… With selected interviews with some of the most important players in the movement today. The proposition is that there are many new devices being developed using clean, cheap, and limitless forms of energy to power them and that these devices may have the capability to change all our lives for the better. They are a new breed of electro-magnetic and magnetic motors and other devices that run on very little current, but which can provide both mechanical work and electrical output in excess to the energy that is put into them. ![]() The Tata Group continues its ever-expanding quest to bring resources to low-income citizens of the world, this time with an announcement that it has joined up with MIT scientist Daniel Nocera, founder of SunCatalytix, to create power from water. Specific terms of the deal have not been disclosed. Just 45 days ago, Nocera and his team stuck an artificial cobalt- and phosphate-coated silicon leaf into a jar of water and managed to create power--at an efficiency that surpasses today's solar panels, no less. The technique mimics photosynthesis by splitting hydrogen from water to generate power from the sun. |
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