green flash

http://en.wikipedia.org/wiki/Green_flash

Ever since I was little, my entire extended family would trek out on the boardwalk at sunset to see "the green flash". My dad always explained why it happened, but despite knowing the reason, the experience was overwhelming. I remember one year seeing it and thinking that it was either an attack, or a meteor, or an alien invasion... well, here's the answer to why, right on wiki!