Blockchain explained

A blockchain is a database that is shared across a network of computers. Once a record has been added to the chain it is very difficult to change. To ensure all the copies of the database are the same, the network makes constant checks. Blockchains have been used to underpin cyber-currencies like bitcoin, but many... Continue Reading →

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The world is falling behind on reducing extreme poverty

Last September, the Bill & Melinda Gates Foundation released its annual Goalkeeper’s report, highlighting the extraordinary progress made in reducing extreme poverty around the world, while also warning that sustaining this progress would not be easy. We now have the first actual data points that ring the alarm bells about a new, unfolding story on... Continue Reading →

Robot Cities: Three Urban Prototypes for Future Living

Before I started working on real-world robots, I wrote about their fictional and historical ancestors. This isn’t so far removed from what I do now. In factories, labs, and of course science fiction, imaginary robots keep fueling our imagination about artificial humans and autonomous machines. Real-world robots remain surprisingly dysfunctional, although they are steadily infiltrating... Continue Reading →

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