Contrails are back in Google Flights

This post describes new contrail classifications in the Travel Impact Model (implemented by Google Flights) that help travelers identify flights with the lowest expected contrail impacts.

The Cost of Contrail Management

This post presents an order-of-magnitude estimate for the long-term cost-benefit of navigational contrail avoidance. At the end, we've built an interactive tool to explore the sensitivity of abatement cost to assumptions.

Contrail Regions 101 (Part I)

This post is the first in a series breaking down the structure of persistent contrail regions and how these shapes inform navigational avoidance strategies. In this first post, we look at the thickness of contrail regions.

Comparing contrails and CO2

This technical primer highlights key differences between contrail and CO2 warming and provides guidance on ways to make meaningful comparisons of the two.

Our Journey So Far

As we outlined in our first notebook post, contrail management presents a potentially huge climate opportunity. The scientific journey leading us here has been fascinating – but it’s far from over. This post offers a brief retrospective for some of our proudest accomplishments on the journey so far, and a

Why it’s time to change course for the climate

Welcome to Contrails.org. We’re excited to share our mission and start documenting progress in this new Contrails.org Notebook. In recent years, science has given us a much clearer picture of the major role that contrails – those thin, wispy clouds planes sometimes leave behind – can play in contributing