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Browse all →Blue Lines is a nonprofit founded to spread awareness of the climate impact of aviation condensation trails, and to speed up the implementation of contrail avoidance to avoid 1-2% of climate change.
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1K
Above Median in Climate
substack
Climate
0.20%· ~2/post
(comments + likes) / subscribers
vs 0.00% category avg
Weekly
1.0 posts/week avg
vs 1.0/week category avg
Free
Category avg: $6/mo
170
newsletters in Climate
Above Median in Climate
out of 170 newslettersPublishing Frequency
Weekly
Last published Apr 16, 2026
1.0 posts/week avg