London | Campaigning by climate activist Greta Thunberg and filmmaker-naturalist David Attenborough is persuading pollution-conscious fliers to try to mitigate the environmental damage caused by their flights.

Sales of so-called carbon offsets are soaring: Myclimate, a Swiss nonprofit whose clients include Deutsche Lufthansa, reported a five-fold uptake in its credits in a year. At Ryanair Holdings, Europe's largest discount carrier, the number of customers making voluntary offset payments has almost doubled in 18 months.

Bloomberg