These baby concrete speakers aren’t as heavy as they look

To paraphrase P. T. Barnum, “there’s a Bluetooth speaker born every minute.” At no time of year is that more true than at CES in Las Vegas, where they are bountiful beyond belief. But very few — nay, only one that I found — are made of concrete. And it’s French! The speakers immediately attracted […]

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How a lightweight, prefabricated concrete roof is just a taste of the coming revolution in architecture

Researchers at the technical school ETH Zurich have constructed a unique lightweight concrete ceiling by mixing computational design, 3D printing, and prefabrication. 
The design makes it cheaper and more efficient so that structures only use co…

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