Airlines have been accused of using a "typical climate denialist" strategy after downplaying decades of scientific research on aviation emissions to block tougher regulations.
Campaigners said the lobbying tactics echoed those of the 20th century tobacco industry, which fought stricter measures by magnifying minor doubts on the health risks of smoking.
Documents obtained by openDemocracy show airlines and airports privately told the government there was too much uncertainty about the additional warming effects of flights to justify introducing new policies to tackle them.
