World's Happiest Country Also Has No Carbon Emissions: National Geographic

Bhutan is one of the world's remaining biodiversity hotspots. Approximately 72 percent of Bhutan is covered by forests. The country's government has a mandate that 60 percent will be protected for all time. Despite their environmental commitment, Bhutan's glaciers are retreating and melting, causing dangerous floods and resource scarcity.

Source: https://www.nationalgeographic.com/photography/proof/2018/march/bhutan-gross-domestic-happiness-sustainability-environment-mountains/