Is there a place where major scientific findings are searchable to easily see the level of evidence supporting, whether they have been replicated, etc?
Only rarely will you find direct replications in the case of medical and social research though, so as a heuristic you can just assume the evidence for everything is weak.
Also, this reminds me of that paper where they "discovered" that if you spray fart smell in a room that people are more disgusted by the thought of a guy rubbing "his bare genitals along the kitten’s body". https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562923/
I wish there were something approachable like that for other fields.