Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light. It is a fairly common phenomenon
From your perspective, a rainbow will always be centered around your own shadow. This particular point materializes the antisolar point, which is the imaginary point on the celestial sphere at the exact opposite from the Sun, from the viewpoint of an observer. So wherever you go, you will never be able to reach the end of a rainbow, as it will move along with you!
Dark Lightning is a very strong, invisible by-product of thunderstorms in the Earth’s atmosphere. Instead of producing light and heat, like regular lightning does, dark lightning releases bursts of gamma radiation from positrons within thunderclouds
According to the Center for Climatic Research at the University of Delaware, an average of 1,500 American city dwellers die each year because of the heat. Annual deaths from tornadoes, earthquakes and floods together total less than 200
