China has put the onus back on Australia to take responsibility for our waste, and Germany has shown us the way with extended producer responsibility for construction and demolition waste.
Many homes, parks and businesses in US cities stand on former manufacturing sites that may have left legacy hazardous wastes behind. A new book calls for more research into our urban industrial past.
A metal found in industrial wastes could help store solar and wind energy until it's needed.
Highly-alkaline industrial waste is usually sent to landfill. But while it might be dangerous, it's also useful.