US start-up Heirloom uses limestone to capture CO2 from the air, while Canadian firm CarbonCure injects CO2 into concrete.

Climate Action and Waste Reduction
A quarter of all data centres are now in water-stressed areas. Let’s not make it a third
US start-up Heirloom uses limestone to capture CO2 from the air, while Canadian firm CarbonCure injects CO2 into concrete.