This year's ads also feature members of ethnic groups such as American Indian and Alaskan natives, who were not featured in the first campaign but have higher-than-average smoking rates, according to Frieden.

CNN: CDC: Second 'Tips' anti-smoking campaign

The combination of different jihadist groups and factions, in shifting coalitions of the willing, has become a growing feature of the militant landscape, and one that makes tracking individuals and groups more difficult.

CNN: Phone call links Benghazi attack to al Qaeda commander

Search categories include new picks, the top picks of gurus, analysts and discussion groups and a unique feature that lets users test stocks using a variety of models, from Peter Lynch's growth-oriented to Ken Fisher's price-to-sales.

FORBES: Stock Pickers

In short, the non-proprietary feature of the standards, maintained by volunteer groups of engineers under the mantle of The Internet Society, is what accounts for their phenomenal trajectory and velocity over the last fifteen years.

FORBES: Is Digital Utopianism Dead?

Single-issue pressure groups have always been a feature of politics, but apartisan voters are now shaking up American elections.

ECONOMIST: Political parties

On a fundamental level, the filmed lessons feature a class of Uruguayan students with social characteristics mirroring those of the target groups of learners.

UNESCO: Country Profile: Uruguay

But contrary to survivors' testimony published by advocacy groups, the report did not find physical abuse or torture to be a feature of the laundries.

CNN: STORY HIGHLIGHTS