City & Urban

Manhattan is getting a $150M 'stairway to nowhere'

NYC turns to recycled toilets to revive its once-thriving oyster population

The mysterious case of Paris' disappearing house sparrows

The ambitious plan to 're-stitch' Atlanta's urban core

Minneapolis launches public kayak-share program

8 extraordinary public elevators

Making the case for a permanent home for the Olympic Games

Can a flower help cities reduce air pollution?

Bigfoot stars in pedestrian safety PSA

Could the charter cities concept lift poor nations out of poverty?

Manhattan's underground park may finally see the light of day

Rooftop tiny houses offer freedom, flexibility and fantastic views