Welcome to Microbe-opolis! 
Think you’re standing on just plain old dirt? Think again. Step outside and look down. Beneath your sandals lies a world that never sleeps. You’re standing on the roof of Microbe-opolis—the busiest place on Earth! In this underground world, the citizens are so small you need a super-powered microscope to see them, but they have some of the biggest jobs in nature. From the tiniest bacteria deep in the soil to the tardigrades that are tougher than any superhero, discover the invisible giants, created by God, that help to keep our food growing and our planet thriving. Grab your imaginary magnifying glass—it’s time to meet a few of your neighbors.