REFERRING to page 728 of NATURE of Nov. 19, greenish appearances at sunset and sunrise may be due to various causes; but I am personally convinced that the sudden green flash, seen by some people ...

Kast lives and works in Green Bay and is known internationally for her abstract work and unique color stories. Fifty percent of the ticket revenue is being donated to Soles4souls' "4Everykid ...

IN some localities the green flash at sunset is by no means so ... Ocean and from the letters of some other correspondents of NATURE. Here in Southern California in the last two years, I have ...