Carl Sagan given new life through YouTube tributes

I've been enjoying a series of YouTube videos dedicated to Carl Sagan's memory. His poetic yet rational world view appeals deeply to me. I read "Demon Haunted World" while I was rediscovering my love of science and I still feel like it has a wide appeal and his writing style is easily accessible to less analytical minds. I'd love to get some of his works on audio-book.

Here are a few of my favorite videos featuring Carl Sagan:







Cheers