> Some people believe in science. [...] This is actually the opposite of science.
Adding to this, belief in science actually means believing in the _process_ of scientific discovery, i.e. believing that _eventually_ the "truth" will be discovered.
As you correctly point out, questioning the current consensus is a fundamental part of the process, but not all challenges to scientific knowledge are legitimate. Many (most?) concerns you hear in the mainstream media are not legitimate but based on logical fallacies, strawmen, ad hominem attacks, etc. I found this list [1] quite useful to guard against such unfounded attacks.
[1] http://utminers.utep.edu/omwilliamson/ENGL1311/fallacies.htm