KLM recently flew from Amsterdam to Aruba using sustainable jet fuel . SkyNRG is also working with airlines and airports around the world to create bioports -- or supply chains of sustainable jet fuel -- in a bid to ultimately bring down the price . The 10-hour flight was the longest to ever use biofuel . Score: 6
KLM recently flew from Amsterdam to Aruba using sustainable jet fuel . The 10-hour flight was the longest to ever use biofuel . Score: 6