Learn how to make glow-in-the-dark slime with household items, in this episode of Gross Science from NOVA. You will need hot water, borax, glow-in-the-dark paint, and school glue. School glue is made of a polymer called polyvinyl acetate, which makes the glue thick and viscous. Adding borax makes the glue even thicker. The phosphors in the paint emit photons over time, creating the lingering glow. To make slime, first vigorously mix half a cup of glue and two tablespoons of paint with two-thirds of a cup of hot water. In a separate bowl, dissolve two teaspoons of borax in one-third of a cup of hot water. Finally, add two tablespoons of the borax solution to the glue solution. To see the slime glow in the dark, charge it by holding it under a light. This resource is part of the NOVA: Gross Science Collection.

Caution: Touching borax is okay, but keep it away from your eyes, mouth, and open cuts. Wash your hands after use.