And the board of K-theory, a maths journal owned by Springer, a German publishing firm, quit in 2007.

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Economic theory says the U.K. is fortunate to have its own central bank willing to print money to smooth the rebalancing of the economy.

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Methane (a.k.a. natural gas) hydrates are an efficient (in theory manufacturable) way to store gas.

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The theory, which goes back to efforts by Danish engineer A.K. Erlang to predict phone traffic in 1909, gets pretty abstruse.

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Financial aid officers have a theory about the money you are trying to put into your 401(k).

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