Evidence requires a truth to be evidence of, but a truth does not require evidence to be true. We don't know everything. Thus we are missing evidence, thus there are truths we don't have the evidence for. But even if that evidence wouldn't exist, that wouldn't make the truths any less true. Dinosaurs existed. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.