A rainbow is an optical event that causes a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. You can find rainbow almost anywhere in the world, which frequently happening after the rain. The one that very unusual is the occurrence of a rainbow beam. What is a rainbow beam anyway? For me, no words can describe it. We are just too lucky to see such epic event from our own eyes. Enjoy the amazing photography taken by Paul Nicklen entitled "Highway Beam". Could you see the car just barely passed its death sentence?