In the activity below, you can make a colorful art material that looks bright in the light! Place 2 tablespoons of Elmer's glue in a small cup and add 2 teaspoons of water. Stir with a popsicle stick ...

While that's likely frustrating for some muscle harvesters or maintenance people, it's good news for scientists, as coming up with a glue that resists being broken down by water has been a challenge.