These cities are working alongside nature to become flood-proof
Barriers, floodgates, aqueducts, empty wells — how these cities are adapting to floods and droughts.
Researchers brew a stronger concrete using — coffee?
Researchers and engineers from RMIT University made concrete 30% stronger in the lab by incorporating aggregates made from coffee grounds.
Nature-based solutions are cleaning up cities
Nature-based solutions can be radical — think covering a highway with a park — but offer meaningful ways to address pollution.
Barcelona’s plan to “pedestrianize” its downtown could transform our cities
Internet-connected “smart” traps help cities combat rats 
Cities are using beets to deice streets this winter
Luminescent materials could cool our cities and light the streets