Snot might seem disgusting, but its actually snot In this delightfully gross yet informative look at boogers, readers learn that they are a very important defense mechanism for our bodies Who knew? Boogers actually trap viruses and bacteria in their sticky web, so your snot is really a superhero Young readers and grownups will delight in this snarky look at the science of snot and ultimately be able to identify what mucus is and why we need it.