Getting the most out of A/B and other controlled tests by Ron Kohavi and Stefan Thomke In 2012 a Microsoft employee working on Bing had an idea about changing the way the search engine displayed ad ...

Every weekday, NPR's best political reporters are there to explain the big news coming out of Washington and the campaign trail. They don't just tell you what happened. They tell you why it matters.

Major funders for the Columbia Journalism Review include non-faculty members of the Board of Overseers; the George T. Delacorte Center for Magazine Journalism Fund at The New York Community Trust; ...