Solution to #1: Celsius Code
This picture is encoded in Bacon cipher, using each of the words "bacon" and a single element in the cipher. The title points to the fact that temperatures are important. Thus "bacon" written in a "hot" ink colour should be interpreted as "A", whereas "bacon" written in a "cold" ink colour as "B". Converting all the words as such will provide the following encoding:
AABBBABA AAAB BAAAAAB BBAABBA BAAABAAA BABABB
This encoding can be translated into the word "Hiduism", which is the answer.
HINDUISM