A Solar 'Breakthrough' Won't Solve Cement's Carbon Problem

A Bill Gates-backed startup called Heliogen uses concentrated solar power to produce cement. The carbon-belching industry needs that—and much more.

A Solar 'Breakthrough' Won't Solve Cement's Carbon Problem
A Bill Gates-backed startup called Heliogen uses concentrated solar power to produce cement. The carbon-belching industry needs that—and much more.
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