Douglas is the co-author of the award-winning children's books My Name is Stardust, Stardust Explores the Solar System, Stardust Explores Earth's Wonders and Elle the Humanist. His upcoming book, Don't Be Mean to 13, will be released on Friday, October 13th, 2023! Douglas co-authored the Stardust Book series with his 17-year-old daughter, Bailey Harris. My Name is Stardust is the first in their series of children's illustrated science storybooks and features a foreword by renowned evolutionary biologist and author Richard Dawkins. Book two in the series, Stardust Explores the Solar System, was released in 2018. Book three, Stardust Explores Earth's Wonders, was released in 2019. Douglas co-authored Elle the Humanist with his 12-year-old daughter, Elle Harris. Elle the Humanist is a beautifully illustrated book presenting humanist ideas and ethics in a way that's warm, welcoming, and accessible for young readers. It features a foreword by renowned philosopher and author Daniel Dennett. In partnership with the Center For Inquiry and the Translations Project, Elle The Humanist and the three books in the Stardust Book series are available for free in Urdu, Arabic, Farsi and Bahasa Indonesia - languages chosen by the Translation Project to help make scientific and humanist literature more available in Muslim-majority countries, where access to such literature can be very limited.Douglas was a featured expert panel speaker at the 2017 BookCon in NYC on Science and Education. While releasing his book at BEA/NYC in 2017, he was interviewed by Helen Little for The Public Library Podcast on iHeartRadio about science, education and literature.