"distinguishing facts from falsehoods" is so broad to encompass all of scientific and philosophical endeavor. I know they mean something much more narrow, but "fact checking" is also fairly broad.

You probably mean things where the truth is widely known and you should have no trouble sorting it out if you put a little effort in. TFA has nearly zero information about what sorts of things they're talking about here, and clicking around the website I found only a _little_ more info.