The real cost of air travel to the environment

The computer didn’t care whether the flights were for terribly important work, to visit elderly family members or to attend a funeral or a wedding (or even, in the case of my flight to London, to research climate policy). It just added up the volume of planet-warming emissions produced.

Suddenly, our household carbon footprint swelled from modest to enormous. All our recycling, waste-reducing, lentil-eating, cycling and EV-driving efforts were undone by the 20 tonnes of carbon dioxide-equivalents produced by two people who fly a lot.