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Computational web based app. Although it's tempting to think of Wolfram|Alpha as a place to look up facts, that's only part of the story. The thing that truly sets Wolfram|Alpha apart is that it is able to do sophisticated computations for you, both pure computations involving numbers or formulas you enter, and computations applied automatically to data called up from its repositories. Why does computation matter? Because computation is what turns generic information into specific answers. To give an amusing example, every school child has at one time or another written a report on the moon, and they probably included the wrong figure for how far the moon is from the earth. Why wrong? Because the distance from the earth to the moon is not constant: it changes by as much as a mile a minute. If you ask Wolfram|Alpha the distance to the moon, it tells you not only the conventionally quoted average distance, but also the actual distance right now, which can at times be well over ten thousand miles off the average. The actual distance is a figure that can be arrived at only by computation based on the moon's known orbital parameters. It's rocket science, if you will.

The smart home market is seeing vibrant activity. The home security giant's flagship service is called ADT Pulse, which offers home automation controls through its smartphone apps. Chief among these is the ADT Pulse Voice app, which can control lights, thermostats, door locks and other appliances by using voice commands.

Experts give us their reactions to the Bash vulnerability in Linux, Unix and Mac. Hundreds of millions of computers are potentially affected by Shellshock, a new bug found in Linux, Unix and Mac. The flaw is related to the command processor called Bash, short for Bourne again shell, which is common to Linux, Unix and Mac systems. So what does this all mean for us?

While sub-Saharan Africa has seen robust economic growth, access to electricity is lagging behind. Shadow Business Secretary Chuka Umunna has called on British industry to support the development of renewable energy in Africa, highlighting the economic value of establishing a firm base in the continent.

Conference starts next week in Barcelona. CBR rounds up some of the products Huawei has confirmed for MWC, as well as the rumours and cryptic hints. 4.5G is what Huawei calls an evolution of existing 4G, rather than a new generation of connectivity in itself.

Rodenhuize power station is an 180MW biomass-fuelled plant located in Ghent, Belgium. The plant was converted from a coal-fired unit called Rodenhuize 4 into a 100% biomass unit.

List: Motion gestures, voice commands and Bluetooth calls. The wearables market has had a more rocky start than companies were hoping for. Alongside the usual issues involved with launching a new product category, such as ironing out the user experience and finding effective branding, one of the big hurdles is inventing a series of use-cases that makes people need a smartwatch.

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