- Aircraft condensation trails contribute to global warming in surprising and subtle waysSpace.com
- Condensation trails from modern aircraft could cause more environmental damageTravel Radar
- Modern planes are worse for the environment than older planesMSN
- Modern, fuel-efficient planes can cause more global warming than older planesNew scientist
- Modern planes emit less carbon than older aircraft, but their condensation trails can be more harmful to the environmentPhys.org