They fall under three broad categories: mitigation, adaptation, and the innovation that makes mitigation and adaptation easier.

FORBES: Richard Alley on Challenges, Choices and Climate Change

There is an abundance of new books to help them answer that question, and they fall into three broad categories: the big picture, self-help and the inspirational success story.

ECONOMIST: Starting out

There are plenty of modern books to help them answer that question, but most of them fall into one of three broad categories: the strategic guide, a technology focus, or career advice.

FORBES: Here's the CIO Playbook for the Next 5 years

But in the Netherlands the intelligence services reckon they have identified three broad categories of people from which actual and would-be terrorists are drawn: recent arrivals, second-generation members of immigrant communities, and converts.

ECONOMIST: Muslim extremism in Europe

Using the interviews, the authors rated management practices on a scale of one to five (with one being worst and five best) across 18 categories within three broad areas: shop-floor operations, performance management and talent management.

ECONOMIST: Maybe management theory is not hocus pocus after all

By assuring "journalists" - the bill's definition is broad enough to cover all of the first three categories described above - they need not fear having to divulge the source of a leak, sources will feel even less compunction than they do today to break their promises and leak with impunity.

CENTERFORSECURITYPOLICY: The Leaker Shield Act