Follow the trail of evidence to see who the author links to, quotes, or references:

• Has the author presented the original source information accurately?
• Is data presented fully or is it "cherry picked" to suppress contradictory evidence?
• Are the author's sources credible?
• How strong is the evidence? How many people does the evidence involve? (e.g., individual anecdotes vs. large scientific study)

Corroborate: Verify information using different types of sources and organizations to gather different viewpoints.