This sleek Paris housing complex was made from the rubble of a 1960s building

Holcim’s Recygénie is the world’s first building to use 100% recycled concrete. It’s a winner in Fast Company’s 2024 World Changing Ideas Awards.

When a group of aging apartment buildings from the 1960s were recently torn down outside Paris, the demolition waste wasn’t thrown out. Instead, it was reused for two of the seven buildings in a new 220-unit housing complex now under construction on the same site.