Faced with growing concern about the impact air travel has on climate change, Scandinavian Airlines (SAS) said it will stop selling duty-free goods on planes to reduce weight and save fuel in order to help reduce emissions.

SAS aims to reduce its emissions by at least 25% by 2030.

Recently, airlines have been under pressure to become more environmentally friendly. In Nordic countries in particular, people are becoming more aware of the impact air travel has on the climate.

A survey carried out by Sweden’s national railway operator, SJ, showed that people are increasingly choosing to travel by train rather than plane or cars because of climate change.

The survey, based on 1,000 interviews, showed that 57% of people think of the environment when traveling in Sweden. Some 37% said they pick trains over planes when possible. That number was only 20% in 2017 and 26% in late 2018.

“The fact that more people choose trains instead of flights and cars for climate reasons causes train travel to soar,” said Tobbe Lundell of SJ.

In 2018, the number of train trips increased by 1.5 million to 31.8 million, SJ said, adding that the number continued to increase in 2019.

At the same time, domestic air travel decreased. Sweden’s main airport operator, Swedavia, said the number of domestic passengers last year dropped by 3% compared to the year before.