1 Anaphylaxis is the most severe allergic reaction and is potentially life threatening. 2  Anaphylaxis is rare. The vast majority of people will never have an anaphylactic reaction.  Common triggers of an anaphylactic reaction include drugs, such as penicillin, insect stings, foods (peanuts, shellfish), X-ray dye, and latex.
A rainbow has depth to it, all along the radius refraction angle of 45 degrees. A halo around the moon on vaporous clouds has red and magenta on the outside, the yellow is minor, green and cyan are the inside colors. The lighter area is to the inside. A moon bow is magenta, white, green, and rare.
The world is full of beautiful beaches-there's no doubt about that. And while most of us will gladly settle for a white sand beach under a bright sun, here's a look at beaches around the world whose sands are the colors of the rainbow. 1. Red. The striking red sands on Maui's almost hidden beach, Kaihalulu Beach.