Walmart buys ad tech startup

Walmart says it's buying San Francisco-based ad tech startup Polymorph Labs as it looks to better compete with online rival juggernaut Amazon in targeting shoppers online.

Transforming the art industry with Blockchain

Sometimes an art forgery is so sophisticated, it fools even the experts. For example, in 2011, Sotheby's brokered a deal for a darkly coloured gentleman's portrait said to be by 17th century painter Frans Hals the Elder. ...

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