Business

In world first, bitcoin becomes legal tender in El Salvador

El Salvador on Tuesday became the first country to embrace bitcoin as legal tender, with consumer demand crashing its brand-new cyber "wallet" system even as the currency's value seesawed against the US dollar.

Internet

Facebook to test letting advertisers avoid topics

Facebook on Friday said it is working on a way to let advertisers avoid having marketing messages appear in feeds alongside content they'd rather not be associated with.

Computer Sciences

Expecting the unexpected: A new model for cognition

Cognitive scientists are modeling the inner workings of the human brain using computer simulations, but many current models tend to be inaccurate. Researchers in the Cognitive Neurorobotics Unit at the Okinawa Institute of ...

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