I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Friday, October 07, 2011
Fly to Clouds of Heaven
I am a wingless bird, flying even to the clouds of heaven.
I give birth to tears of mourning in pupils that meet me,
even though there is no cause for grief, and
at once on my birth I am dissolved into air.
What am I?