"Knowledge is of two kinds," said Samuel Johnson in 1775. "We know a subject ourselves, or we know where we can find information upon it." Today we think of Wik

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From the controversy surrounding Edward Snowdens security leak of classified information, to hacked email accounts of prominent political candidates, internet p

Forty-four contributions survey the established and experimental means of dating Quaternary Period surficial materials. The basic theory, procedures, and accura