Mind-boggling to consider that we can now connect two points on the globe that are 20 hours apart

Mind-boggling to consider that we can now connect two points on the globe that are 20 hours apart. And the last challenge seems to be hour 21, which would connect London to Sydney. This is a surprisingly interesting piece on the economics and technology of making this ultra-long-haul flight happen. https://bit.ly/2MBLXye Source: https://www.facebook.com/goaviationme