The document discusses air travel, carbon offsetting, and personal responsibility. It notes that CO2 emissions from air travel have tripled due to the growth of low-cost airlines and more travel routes. While individuals see air travel as a rational choice, the desire for mobility may stem from pursuing convenience and fragmented modern lifestyles. Carbon offsetting schemes allow individuals to offset the emissions from their flights, but raise questions about their effectiveness and whether they sanction intrinsically harmful behaviors.