Facts must be observable and based on the premise of logic. If logic is correct, than facts are nothing but observations of the condition of something. It's provable by logic. Truth on the other hand only requires belief. We all have our own truth. Things can be truth without being a fact. Facts can exist but still not be true to those who do not believe in logic.
Evolution is one of the most well proven facts. We have fossils, we have the decay rates of carbon. We know how old things are and in which order they appeared. Yet, it's rejected my many who reject logic. They don't need to prove that all these facts are not true, it only requires their belief, their truth.
Katia, I don't know where you are getting this stuff, but you have been coming up with some great philosophical questions lately. Really makes one think.
Love always,
Elizabeth