i am happy to say paul bogart is alive and well but his basic message is a variation on the great germanoet outcry more natural light. to see what our love affair with artificial lighting causes us to miss, bogart has traveled all the around the world searching for a clean views of the heavens. he is the editor of the anthology let there be light:testimony on behalf of the dark and the sole author of "the end of night: searching for darkness in an age of artificial light". when not on the road he teaches writing at james madison university in virginia. with the national book festival being held indoors this year he will have to deal with artificial lighting and make the best of it today. these and gentlemen, please welcome paul bogard. >> thank you for that introduction and thank you for being here, and i'm excited to see billy collins. i got to see him at the theater so it was good. an end -- "the end of night: searching for darkness in an age of artificial light" is a book of stories. i like to make the disclaimer at the beginning that i am not a scientist. i am a lover of science. i a