Airbus invested $15 billion developing its new A350 XWB line of jets, and they are lighter, more fuel-efficient, and more aerodynamically engineered than previous generations of commercial aircraft. But for a prospective passenger, none of that matters as much as this: They’re also designed to mitigate jet lag.
The planes debuted earlier this year and have now landed in the US as part of the Qatar Airways fleet.
http://qz.com/580209/airbus-is-build...-ease-jet-lag/