Rocks mined from the seafloor have been confirmed as a viable source for rare earth metals, and thus a tiny piece of the ocean might soon find its way into a cell phone or computer chipboard near you. The finding, published in the April 2014 issue of Applied Geochemistry, all but guarantees a new round of focus on overcoming the challenges—both industrial and environmental—of extracting mineral riches from the ocean depths.
Having found a gold lining to the West’s otherwise devastating drought
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Plants that eat metal sound like a biological impossibility. But these hungry little guys exist, sucking tiny bits of toxic metal from the soil. They don’t just clean the Earth, either—they can actually mine bits of gold and nickel for use by humans.
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The city of Kiruna, Sweden, is sinking—the iron mines beneath it are making the ground collapse. So, over the next two decades, its 20,000 residents will be relocated, along with their homes, offices, stores, and schools, to another, brand-new city about two miles to the east.
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Most of us think of Germany as one of the most energy-progressive countries in the world. But in recent years, it’s also increased its dependence on a form of energy that’s anything but clean: coal. And it’s demolishing or relocating entire towns to get at it.
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Hold on to your engagement rings. Diamonds, according to an industry report, are falling off a supply cliff in 2018. As existing diamond mines are depleted even as worldwide demand increases—thanks, especially to a newly rich Asia—three months’ salary might soon buy you a much punier rock.
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Oh, the things humans will do to get their grubby hands on gold—a metal mostly prized for its ornamental use, hoarded in bank vaults and jewelry boxes, though we’ve arbitrarily decided it’s worth, uh, its weight in gold.* The deepest gold mine in the world is Mponeng, a 2.5-mile hole in the ground in South Africa. A whole underground city—lightless and lawless—lives inside the mine.
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Oopsie. About a million liters of radioactive acid sludge accidentally poured out of a tank at the Ranger uranium mine in northern Australia. As if the spill itself weren’t bad enough, the mine is also located in the Kakadu National Park, where most of Crocodile Dundee was filmed. That place is a national treasure.
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Canada’s tar sands are an unequivocal environmental nightmare, ravaging the landscape and spewing billions of gallons of toxic water into the world. Now, oil companies are claiming they’ve figured out what to do with all that poisonous water: Turn Alberta into one giant man-made lake district.
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As Bitcoins have become more valuable, they’ve also become much harder to accumulate using the mathematical process known as “mining.” This air of futility hasn’t fazed ASRock, however, as the company has revealed two new motherboards that promise to help DIY-ers to “join the gold rush now!” The H61 Pro BTC and H81 Pro BTC are both Intel socket boards, with the latter being Haswell compatible, and their main party trick is to carry extra PCIe slots and power connectors so you can exploit the compute power of up to six graphics cards simultaneously.
What ASRock doesn’t specify, however, is how much profit one of its fully-loaded mining motherboards might deliver. So, although we’re quite deliberately not experts at this stuff (aside from a bit of armchair interest), we plugged some numbers into the Bitcoin Profitability Calculator, based on six Radeon HD 7990 cards running in parallel, and discovered that this monster of a system might never actually break even, due to its ridiculously high energy costs. This could well explain why all the big boys use dedicated ASIC boards for mining these days, instead of consumer-grade hardware.
Filed under: Desktops
Via: Bit-tech
Source: ASRock [1], [2]
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