Faith is as you say without evidence. However some religious people it's not have to do with evidence or if they are right or not. It's about "experience god thru others" , "life itself is god" and "it's about love and understanding". That's a definition I've heared of that belief and faith is, and the unkown is also god of course, according to some.
- Science is not trying to create an answer like religion, it tries to find an answer.