IT'S A DEFLATIONARY EPOCH:

3D-printed cement houses are about to take off, offering a cheaper, more efficient way to provide homes for those who need them -- as long as they can be built in ways that don't worsen climate change.

Why it matters: Developers of 3D-printed homes think they can take on multiple challenges: the affordable housing crisis, the shortage of skilled labor and rising material costs.

At least one is also adapting its technology to mass-produce homes without releasing too much carbon into the atmosphere.

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