The implications of the theory for conservation are straightforward.

ECONOMIST: Road kill

Because as economists have found and explained through signaling theory and conspicuous conservation, making your socially-focused choices visible can motivate long-term behavior change.

FORBES: Sustainability, By Design

Proceeds from the sale, if allowed, would go into a special pot to help finance conservation, anti-poaching and, at least in theory, rural development for local people, most of whom regard elephants as a destructive nuisance.

ECONOMIST: Tusks and horns and conservationists | The

If ten people each own one of those acres, in theory five could build on their land in exchange for promises of conservation in perpetuity from the other five.

ECONOMIST: An exchange for species rather than stocks