Carl Sagan Takes Questions: More From His ‘Wonder and Skepticism’ CSICOP 1994 Keynote Carl Sagan From: Volume 29, No. 4 July / August 2005 Carl Sagan Collection Twitter Facebook [フレーム] If you have any trouble viewing this article, download the article instead: Download Carl Sagan Carl Sagan was a science popularizer, co-creator and host of Cosmos, and author or co-author of many books including The Demon-Haunted World: Science as a Candle in the Dark. See more articles