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Your individual water footprint is equal to the water required to produce the goods and services consumed by you. Please take your time and feel free to use the extended water footprint calculator to assess your own unique water footprint. The calculations are based on the water requirements per unit of product as in your country of residence.

"Wolfram Alpha is on a mission to develop an "app for every course." The company launched its first three subject-specific iPhone apps on Tuesday, and all three - Algebra, Calculus, and Music Theory - look to be promising educational tools. The apps are based on Wolfram Alpha's computational search engine, which can do things like solve integration problems, calculate flying times between cities or plot a person's life on a timeline."

Forget Math homework and "showing working!" What is Wolfram Alpha? It is a supercomputing brain. It provides calculates and provides comprehensive answers to most any science or math question. Unlike other search sources, you and your students can ask questions in plain language or various forms of abbreviated notation. Contrary to popular belief, Wolfram Alpha is not a search engine. Unlike popular search engines, which simply retrieve documents based on keyword searches, Wolfram computes answers based on known models of human knowledge. It provides answers which are complete with data and algorithms, representing real-world knowledge.