Still, success was partial unless the oysters could reproduce, paving the way for a self-sustaining system.

FORBES: Oysters Are Back In New York City Waters

Their solution is to create a financially self-sustaining public toilet system.

FORBES: Let's Stop Overlooking Systems Innovations

Other demands include government commitments on affordable housing and sustaining balanced and vibrant communities and a review of the planning system to increase the availability of land for homes.

BBC: NEWS | UK | England | Poverty 'blights 1m rural homes'