25% gave ‘don’t need to travel by plane as much’ as their main reason, and another 12% gave ‘to limit the effects of climate change’ as their main reason.
Dywedodd 25% ‘dim angen teithio mewn awyren cymaint’ fel eu prif reswm, ac roedd 12% arall yn nodi ‘cyfyngu ar effeithiau newid hinsawdd’ fel eu prif reswm.