That gorgeous arc that paints the sky is not an arc after all. What appears to be an arc is actually a circle, AccuWeather explains. The horizon obscures the parts of the circle that we can't see. As ...

MOLINE, Ill. — Rainbows are one of nature's most beautiful and calming displays, taking light and bending it in a certain way that brings out the beautiful colors of the visible light spectrum. Many ...

These days, it’s common to see rainbow photos flooding social media right after it rains. Whether they appear over crowded city streets or quiet fields, rainbows always catch people’s eyes. They might ...