Retired professor of environmental microbiology from Inst. Microbiol. UFRJ (Federal University of Rio de Janeiro). A biologist and hobbyist photographer since the 1960s grew up near Bellevue Washington, USA. Studied in Tacoma WA (UPS), Davis CA (UCD), Rio de Janeiro Brazil (UFRJ) & Atlanta Georga (GSU). Now reside in Rio de Janeiro where there is plenty of sunlight and things to photograph.