As if losing the presidency of Harvard for hinting that there might be a biological explanation for the preponderance of men in academic science wasn't enough, Lawrence Summers now appears to be persona non grata elsewhere too.

A few weeks ago the University of California, Davis rescinded an invitation for him to speak. More than 150 faculty members signed a petition protesting his appearance, saying Mr. Summers "has come to symbolize gender and racial prejudice in academia." Davis ecology Professor Maureen Stanton was "appalled and stunned that someone like Summers would be invited to speak." . . .

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