WASHINGTON (ABC7) — It's an experiment done in classrooms across the country. But as students and teachers discovered three weeks ago at a Fairfax County high school, it can have devastating results.

This experiment demonstrates capillary action - how water can climb up through tiny spaces in materials. You'll create a beautiful rainbow pattern while learning about the same process that helps ...

TULSA, Okla. — Rainbows occur in nature as sunlight is refracted off raindrops, which creates an arc in the sky. There are other ways to experience and create a rainbow, which we did at Discovery Lab ...