From Marcus Rezende:

Re: Claim of alien cells in rain may fit historical accounts: study (Jan. 22): The article about “red rain” remembers me the inumerous relates of such cases named by the bishop Georgius Florentius Gregorius of Tours, France in his book “History of the Franks” - Historia Francorum, written in the VI century. He attributed this phenomena to God’s intention to anounce important things as pests, kings’s deaths, draught, fires, etc. He called them “PRODIGES”. He mention many prodigies as “fires in the sky”, things like the actual “UFOS”, etc. His book really deserves a curious kind mind in its reading.

Marcus Rezende
Rio de Janeiro, Brasil