Internationalization has top priority for higher and university education, says the specialist journal on internationalization in higher education. In this context, flights are necessary to maintain foreign contacts. Students following education in foreign countries can also be found at airports more and more often for visits to the home front.

Transfer quotes an article from De Volkskrant. This daily holds airplanes worldwide responsible for 3 percent of Co2 emissions, whereby the emission of greenhouse gases high up in the atmosphere is 2.7 times as harmful as on the ground, claim scientists. In addition, the personal energy consumption is increased substantially. The average energy consumption of a Dutchman is approximately 9,000 kilos per year. A flight to Thailand adds about 2,200 kilos to this. /.