What air travel might look like in 2050

If the aviation industry was a country, it would rank among the world’s top ten emitters of carbon dioxide (CO₂). Aviation emissions have risen by 70% since 2005 and as demand increases in rich and poorer countries, they’re forecast to increase by between 300% and 700% by 2050. Arresting this incline will be the first step towards a sustainable system of international travel – but how could it be done? A frequent flyer tax would be relatively easy to implement but it could mean the richest can still afford to fly while the poorest are priced out. Most plane passengers… This story continues at The Next Web