It bears noting that externality theory in economics includes both negatives and positives: supplying energy permits untold and profound benefits.

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Moodle is designed to support pedagogies based on social constructionist theory, and includes activity modules such as forums, chats, resources, journals, quizzes, surveys, choices, workshops, glossaries, lessons, and assignments.

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Steven Hillion is vice president of analytics at EMC Greenplum, and has led engineering at firms such as Siebel, KANA and QRS. His educational background includes a major in number theory at the University of California, Berkeley, which got him thinking about moving software engineering closer toward mathematical applications.

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Cast includes Jim Parsons of The Big Bang Theory and the singer Rihanna.

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HTC's first entry into the tablet market, the Android-based HTC Flyer, hasn't grabbed much market share, but give credit to HTC for trying to think differently: The 7-inch Flyer includes a stylus, of all things, on the theory that there are applications where you want an alternative for taking notes to using your finger or tapping a keyboard.

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In 1995 Cambridge appointed him to the prestigious Cavendish professorship, whose list of past incumbents includes James Maxwell (1831-79), who created the theory of electromagnetic waves.

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