Wall Street technique to protect Bhutan's nature in perpetuity

The government of Bhutan has teamed up with the World Wildlife Fund to protect its natural spaces in perpetuity. A $40 million fund is released to the government as it meets targets, such as diverting all the parks' revenue to their upkeep. After a 14-year transition, bolstered by the parks' economic development, the government should be able to maintain them single-handed.