Dealing with what you believe or take on trust when it comes to science, it isn't the same thing as religious belief. Consciously or unconsciously, you will be be weighing up your source, you'll be considering the reputation of the scientist or journal, asking yourself if there's an axe being ground or whether there's a bit of self-publicising going on. That's where the trust comes in. You will have used reason to assess your source of information. If you truly used reason to assess the existence or not of God, you'd dismiss the concept immediately.