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"An ambitious solar energy project on a massive scale is about to get underway in the Arizona desert. EnviroMission is undergoing land acquisition and site-specific engineering to build its first full-scale solar tower - and when we say full-scale, we mean it! The mammoth 800-plus meter (2625 ft) tall tower will instantly become one of the world's tallest buildings. Its 200-megawatt power generation capacity will reliably feed the grid with enough power for 150,000 US homes, and once it's built, it can be expected to more or less sit there producing clean, renewable power with virtually no maintenance until it's more than 80 years old."

Sharing powerful stories from his anti-obesity project in Huntington, W. Va., TED Prize winner Jamie Oliver makes the case for an all-out assault on our ignorance of food. Jamie Oliver is transforming the way we feed ourselves, and our children. Jamie Oliver has been drawn to the kitchen since he was a child working in his father's pub-restaurant. He showed not only a precocious culinary talent but also a passion for creating (and talking about) fresh, honest, delicious food. In the past decade, the shaggy-haired "Naked Chef" of late-'90s BBC2 has built a worldwide media conglomerate of TV shows, books, cookware and magazines, all based on a formula of simple, unpretentious food that invites everyone to get busy in the kitchen. And as much as his cooking is generous, so is his business model -- his Fifteen Foundation, for instance, trains young chefs from challenged backgrounds to run four of his restaurants. Now, Oliver is using his fame and charm to bring attention to the changes that Brits and Americans need to make in their lifestyles and diet. Campaigns such as Jamie's School Dinner, Ministry of Food and Food Revolution USA combine Olivers culinary tools, cookbooks and television, with serious activism and community organizing -- to create change on both the individual and governmental level.

"Scientists from Oxford University have made a significant step towards an ultrafast quantum computer by successfully generating 10 billion bits of quantum entanglement in silicon for the first time -- entanglement is the key ingredient that promises to make quantum computers far more powerful than conventional computing devices."

"The engineer at Embry-Riddle Aeronautical University in the US is currently finalising designs for a series of turbines that could be used to harness the immense energy of the Gulf Stream, flowing deep in the Atlantic Ocean."

"Ever wonder how much energy is used by your different major appliances or electronics? Or how much energy all such appliances and electronics in the U.S. use? Here's some info on that for four big ones: TVs, computers, clothes dryers, and refrigerators."