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

Anyone can receive a blessing from the temple elephant, Lakshmi. (After you give her a 100-rupee note, she whacks you gratefully on the head.) But train passengers have a special advantage: You go back at night to Hampi's central Vittala Temple complex, a compound of intricately sculpted halls with rows of pillars and the central stone chariot that gives the train its name.

FORBES: Photograph: Andre Fanthome (RAAS)

But attempts to strengthen individual strands unilaterally without foreseeing the unintended consequences, compound the fears that the problems are too complex and intertwined for those in charge to even understand, let alone fix.

FORBES: Unintended Consequences Keep Coming

Whereas biologists tend to see biotech as the search for a compound, Mr Levin thinks of it as a complex production process.

ECONOMIST: Millennium��s bugs

But 10 days after he returned to the complex from a visit home, terrorists sped in on pickups, overtook the compound and made hostages of its workers.

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One key element in searching for life on Mars is the presence of methane in the Martian atmosphere As a simple carbon compound, methane is often a precursor to the formation of the complex organic chemicals that make life possible.

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