According to an article in today’s Guardian, Costa Rica “tops index ranking countries by ecological footprint and happiness of their citizens”
A rainbow over San Jose, the capital of Costa Rica
“Costa Ricans top the list because they report the highest life satisfaction in the world, they live slightly longer than Americans, yet have an ecological footprint that is less than a quarter the size. The country only narrowly fails to achieve the goal of what NEF calls “one-planet living”: consuming its fair share of the Earth’s natural resources.”
PS: the BBC now has a deeper analysis/explanation of this index. You can read it here.