Mr. Pilate once asked "What is truth?". Even though there are various definitions and approaches, I credit Pierce and pragmatists with the best one - truth is what we know at the end of inquiry/investigation. So, the "end of inquiry" being flexible, the truth can change as well, and I think, last decade and especially last year can attest to that. Something reported as a fact today - may not be a fact once we get more information in.