David Mitchell (and his colleague Ehsan Erfani) are pointing out that the high cirrus clouds are like a blanket warming the planet. If we poke holes in the blanket, we release heat. Likewise, by seeding the cirrus clouds in the winter at the poles, we can release excess heat from our world. For the video, audio podcast, transcript and comments: https://tosavetheworld.ca/episode-595-thinning-cirrus-clouds