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Garrett Lisi responds to criticism of his proposed unified theory of physics

This past December Jim Weatherall and I wrote " A Geometric Theory of Everything " for Scientific American , describing progress on unified geometric theories of gravitation and the Standard Model of particle physics. My personal contribution to this progress, a developing model called E8 Theory, was introduced three years ago in a paper titled " An Exceptionally Simple Theory of Everything ." Almost immediately after this paper appeared, physicists and the interested public began a lengthy process of considering and discussing this new theory's merits and faults. Not surprisingly, the initial response was largely critical, with most commenters encountering some unfamiliar mathematical structures in the paper and responding with appropriate skepticism

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A New Way to Find Parking Spots Online (And Pay What They’re Really Worth)

San Francisco, with a large population crammed into a very small footprint, can be notoriously hard to park in. But, as it's also one of the tech-savviest cities in the country, they've come up with a solution to make it easier to find a place to leave your car and to better value parking places

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Coming Soon: Genetically Modified, Malaria-Fighting Mosquitoes

Malaria kills one million people a year in the developing world. This is incredibly frustrating, because we can cure malaria. Everyone who dies from it dies simply because we can't get them the proper vaccines or drugs.

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Is the "Check In" Era Nearly Over?

Each day, Inc.'s reporters scour the Web for the most important and interesting news to entrepreneurs. Here's what we found today. Is the "check in" nearly dead

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Dark matter could provide heat for starless planets

(PhysOrg.com) -- In a resent paper posted at arXiv.org and submitted to Astrophysical Journal, Dan Hooper and Jason Steffen, physicists at Fermilab in Illinois, present the theory that cold and dark planets, not heated by a star, could be heated by dark matter.

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Quantum explanation for how we smell gets new support

(PhysOrg.com) -- Since 1996, when biophysicist Luca Turin first suggested that quantum mechanics may help explain how we smell various odors, the idea has met with controversy.

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Homophobia Phobia: Bad Science or Bad Science Comprehension?

Two columns ago , I discussed evolutionary psychologist Gordon Gallup’ s theory about the possible adaptive function of homophobia, or, more broadly defined, negative attitudes toward gay people. Central to his position--which, he assures me, has not since wavered--is that homophobic responses "are proportional to the extent to which the homosexual [is] in a position that might provide extended contact with children and/or would allow the person to influence a child’s emerging sexuality." I also described a set of studies meant to test some hypotheses related to this theory, and which, according to Gallup, offered provisional evidentiary support. I expressed some unease with the implications (and insinuations) of Gallup’s line of argument

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Leadership Hall of Fame: Tom Peters, Author of "In Search of Excellence"

We continue our examination of the business book In Search of Excellence with an interview of author Tom Peters. Why was it so successful, what is the book's legacy and what does a restaurant owner in Chicago have in common with Jack Welch? What was the impetus for you to write In Search of Excellence

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String Query: Physicists Prove to Be of Many Minds about a Unified Theory of the Universe

NEW YORK CITY--Amid a panel discussion about string theory and other candidates for the theory of everything--the long-sought system that would unify the four forces of physics--Brian Greene said something that sounded a bit curious. "If you asked me, 'Do I believe in string theory?'" began Greene, one of string theory's most famous proponents

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