imparzialissima di sicuro
, basta vedere le fonti dei dati:
Air France, 2020, 'Can I offset CO2 emissions related to
my Air France trip?', AirFrance
British Airways, 2020, 'Carbon Neutral | Leapfrog',
British Airways
KLM, 2020, 'KLM corporate biofuel programme',
Royal Dutch Airlines
Lufthansa, 2020, 'Compensaid — fly CO2-neutral',
Lufthansa (
https://compensaid.de) accessed
30 September 2020.