When you’re booking a flight online, you’ll often be presented with the option to offset the carbon footprint of your journey. You’ll be asked if you want to add a small surcharge – sometimes even under €5 – to the cost of your booking to compensate for a proportion of the emissions of your flight. However, carbon credit schemes have repeatedly been called out by scientists and climate activists as ineffective and even harmful. So should you be choosing to offset your flight emissions or are there other options to make your journey greener? How does carbon offsetting for flights work?When you …