Few things stop people in their tracks quite like a vivid arc of color stretching across a stormy sky, or the ghostly twin suns flanking the horizon at dawn. These atmospheric light phenomena — rainbows, halos, and sundogs — are…
Few natural phenomena are as universally observed—and as rarely understood—as the blue sky. Every clear day, a canopy of vivid blue stretches overhead, so familiar that most people never stop to question it. The answer lies deep in the physics…
The ozone layer is a region of Earth’s stratosphere containing high concentrations of ozone gas that absorbs the majority of the sun’s harmful ultraviolet radiation. Located 15 to 35 kilometers above Earth’s surface, this atmospheric shield is essential for protecting…
