It had been thought that new brain cells grew only in young children, and that thereafter every bump on the head or glass of wine led to a loss of intelligence.

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One of the simplest procedures, with a relatively short recovery time, is called an exostectomy, in which the bump on the head of the first metatarsal is thinned or shaved off with a surgical saw.

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If you slip in a mud puddle, destroying your iPhone (along with any locally stored encryption keys) and forgetting your passwords as a result of the bump on the head, can you still recover your data?

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The top lot will be Shepard's drawing for A.A. Milne's "Winnie-the-Pooh, " "Here is Edward Bear, coming downstairs now, bump, bump, bump, on the back of his head, behind Christopher Robin" (1926).

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The small bump in home prices in April was likely due to the traditional spring buying season showing its head.

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