Mychal Threets, known on social media for his kind demeanor and passion for the library, is the new host of a revived Reading Rainbow. PBS has picked social media sensation Mychal Threets to bring back the beloved children's television show Reading Rainbow. From 1983 to 2006, Reading Rainbow kept kids glued to their screens across America. "Reading Rainbow is returning, with all new episodes," Threets said in the video. Reading Rainbow did more than just entertain.