People can have faith in religion and faith in science. People can maintain these faiths without actually understanding the scripture or the science, respectively, behind their faiths.
This is what surveys have found, at least: the vast majority of Americans believe the Bible is in some sense the word of God, but they are unable to answer some pretty basic questions about the content of the Bible. Likewise, surveys have found that while many people might be inclined to "believe" in global warming, surprisingly few are able to explain the science behind it.
Fortunately, Michael Ranney at the University of California, Berkeley, put together a video that explains the science in less than one minute.