And individuals could earn the coins as well, by efforts such as no-till agriculture or green ranching, peat bog creation, kelp farming and also swapping out dirty machines for clean ones.
Candidate sites included tropical corals in the US and Australia, a mountainous peat bog in Poland, the Antarctic ice sheet and even the human debris accumulated under the city of Vienna.
After we had passed the basaltic wall of the fiord of Stapi we passed over a vegetable fibrous peat bog, left from the ancient vegetation of this peninsula.