Normal vision is based on more than one hundred million receptors in each eye that process light, say experts.
Globally, secondary schools have been accommodating almost one hundred million more students each decade, with the total number growing by 60% between 1990 and 2009.
Normal vision is based on more than one hundred million receptors in each eye, but it is impossible to squeeze that many electrodes into a tiny device that has to lay on the retina, said John Wyatt, a professor in the department of electrical engineering at MIT who has been working on a retinal prosthesis since 1988.
The sale was bringing in several hundred dollars each weekend until one neighbor complained and she got a visit from the city.
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Mr. DANIEL YERGIN (Cambridge Energy Research Associates): When people build offshore platforms, they build them for a hundred-year storm. 2005 was a year that you had not one but two hundred-year storms within a matter of weeks of each other, and the result was one of the biggest energy shocks since the 1970s.
In the fall of 2011, he sold two Mongolian oviraptor nests for more than three hundred and fifty dollars each, a tyrannosaurus ileum for five hundred and sixty-one dollars, a tyrannosaurus tooth for three hundred and twenty-five dollars, and a tyrannosaurus tail vertebra for four hundred and ten dollars.
Each one is stuffed with several hundred tiny glass spheres or shards, of random size and glued in place in a random pattern so that each token, which can be inserted in a credit card, is unique.
She says it will significantly reduce the one hundred thousand minutes of delays caused by the weather each year.
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