The greenest airlines were announced recently. The researchers have analyzed the work of the 20 major airline carriers.
The airline company, which creates the least pollution, is the Finnish Finnair. In the creating of the rating, the data from 2014 concerning the CO2 emissions made by the planes were used.
The second place was awarded to a Portuguese airline company and the third place to an Australian low-cost airline.
The worst results belong to the American airlines.