Truth is a loaded word. Its meaning and significance often get blurred amidst disputes.
For instance, I often get told about “the truth” when talking about climate change. From both sides.
If “the truth” is how much the global average temperature will increase by the end of the century — I don’t know the truth. Nobody knows that, not even the most dedicated climate scientists. They have predictions, but not measurements.
What I use to inform myself and support my claims in the articles I write are scientific reports. They use climate models to predict what will happen using the available data. To the best of my knowledge, they’re well-researched and well-made.