Answer: In which story did all the humans turn to clay?
~ There's no such story that tells "all humans turn to clay". I suppose what you mean is a story that says "humans came from clay". The story of the latter actually came from mostly different versions of mythology, the Bible, and Quran.
In which story did a rainbow appear to tell humanity that no such flood would ever occur again?
~In the Bible's Genesis flood narrative, after creating a flood to wash away humanity's corruption, God put the rainbow in the sky as the sign of his promise that he would never again destroy the earth with flood (Genesis 9:13–17):
Explanation:
