Indexes have morphed from their market-matching beta roots to complex trading- and securities-weighting strategies that are supposed to add excess returns, known as alpha.

FORBES: No Free Lunch from Alternative Indexes

The roots of stagnation are complex.

ECONOMIST: A tale of two Mexicos

Whether filming hippos in the clear water of Mzima Spring, flamingo chicks in a dried-out soda lake or the complex layers of life within a massive baobab tree, the Roots always let their subjects tell their own stories making astonishing discoveries along the way.

ECONOMIST: Animals in Africa

Casio has redesigned the ClassPad series' software keyboard to make this new model easier to use, organizing functions to correspond to three levels of learning difficulty, beginning with basic functions used by everyone like fractions, square roots, and trigonometric functions, then advanced functions like differential calculus, complex compound numbers, and sigma calculations, and finally even more advanced calculations including piecewise and user-defined formulas.

ENGADGET: Casio's touchscreen graphing calculator arrives in 2013, makes the TI-84+ look dated

Thailand, Indonesia and South Korea all are faced with complex -- and hugely expensive -- financial crises that in most cases have their roots in bloated banking industries.

CNN: APEC Shortens Its Horizon

Kidjo's music is completely contagious, with rhythms that sound like a complex combination of soul and Brazilian music, and that at the core reflect her West African roots.

NPR: Angelique Kidjo: Dancing Her Way To The Front

It is a stark reminder of the fact that, while Mali may be grappling with international threats, the roots of much of the current turmoil here are home-grown, and highly complex.

BBC: Mali crisis: Relief in Diabaly as French forces roll in