Classroom Questions Questions for ‘Cool Jobs: A world aglow’ Chemist Matt Liptak and doctoral student Morgan Cousins look at a test tube of molecules. When put in thicker fluids, the molecules glow bright green. Joshua Brown Share this:EmailFacebookTwitterRedditGoogle ClassroomPrint By Science News for Students March 14, 2017 at 9:45 am Classroom questions are available for free with registration. Learn more Register to access: Client key* E-mail* Log in Already Registered? Enter your e-mail address above.