Something unusual keeps turning up in marine sediments. These are large crystals of magnetite, formed by biology rather than geology, and preserved fo.

A new Wharton study explains why stock returns aren’t random. Correlation neglect causes market overreaction, momentum, and reversals investors consistently misprice.

Abstract: A random-sampling-based performance evaluation method to comprehensively and objectively reflect fault detection and diagnosis (FDD) is proposed. This method is used to test and evaluate the ...