Aviation is responsible for (depending on who you ask) around 2-4 % of all CO2 emissions. It really is at the very end of the list of things to worry about. Mo

Aviation is responsible for (depending on who you ask) around 2-4 % of all CO2 emissions. It really is at the very end of the list of things to worry about. More than half of CO2 is produced by the energy sector. More than a quarter is produced by wheeled vehicles with combustion engines. Solving these two alone would also slash the lifecycle emissions of most consumables. So, let's concentrate on these things first, shan't we?