To keep the water running in LasVegas, recognize scarcity and let water rates rise-- double or even triple. Encourage homeowners to trade water rights. Let the market determine how much water people use, not the water police.
As overfishing depletes marine resources and reduces incomes for fishermen, a new approach giving fishermen a share in their fishery is soving by an environmental and economic problem. Catch-share management with a strong local leader in charge is winning converts around the world.