France's former culture minister Jack Lang has been summoned to the foreign ministry to explain his links with the convicted sex offender Jeffrey Epstein, a source close to the presidency told AFP ...

And there we have it. The January transfer window is closed for another year, and though it was a relatively quiet month when it came to big-money deals, that does now mean we could be set up for ...

Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.