Who Pooped? for grossest topic I've covered on FreeTech4Teachers.com. The Cleveland Clinic offers and infographic titled The Color of Snot. The infographic breaks-down what the color of your nasal mucus indicates about your health. The infographic might be of interest to health teachers and school nurses to print and post for students to read. You can read more about the infographic on the Cleveland Clinic's website or grab the PDF of the infographic here.
H/T to Lifehacker.