4:20newsOctober 15, 2018Parkland students speak out about their new bookEmma Gonzalez, Matt Deitsch and Delaney Tarr appear live on "GMA" to discuss their new book and their movement to encourage young people to vote. Up Next in newsParkland survivor discusses Florida primary resultsAugust 29, 2018After Parkland shooting, some call for mental health reformsFebruary 15, 2018Sandra Day O'Connor, 1st woman on Supreme Court, dies at 93December 1, 2023