The Problem
Contrails cause 1-2%
of global warming.
We can eliminate most of that at near-zero cost.
Aircraft cause warming in two ways: greenhouse gas emissions and contrails. That's because contrails (aircraft condensation trails) often grow into cirrus clouds that trap heat in the lower atmosphere and significantly add to global warming. Recent estimates show that contrails cause about the same amount of warming each year as all the CO₂ emitted by all flights from 1940 to 2018.
The Solution
Adjusting 5% of flights could avoid up to 80% of contrail warming.
Contrails.org is a non-profit applied research organization dedicated to reducing aviation's climate impact through contrail management.
Originating from a small working group at Breakthrough Energy, Contrails.org brings together leading scientists, technologists, and industry experts working to make contrail management a practical reality.
