Checking Sources and Facts

Professional fact-checkers have a counterintuitive habit: when they encounter a new claim online, they immediately leave the page. Instead of reading the article carefully to decide if it seems trustworthy, they open a new tab and start searching for what other sources say about the claim and about the outlet that published it. This technique is called lateral reading, and studies show it is far more effective at detecting misinformation than the approach most people take — reading more deeply into the original source. In this lesson you will build a practical toolkit of verification habits that fact-checkers actually use.

Lateral Reading: The Fact-Checker's Core Move

Lateral reading means checking across multiple independent sources rather than reading more deeply into the one source you are evaluating. Instead of asking 'Does this article convince me it is reliable?' you ask 'What do other reputable sources say about this claim and this outlet?' Here is the basic process. You encounter a claim. You open a new search tab. You search for the claim itself — not for more articles from the same outlet, but for coverage from different outlets, fact-checking organizations, or subject-matter experts. You also search for the name of the outlet or author to find out who they are and whether they have a track record of accuracy. This works because it is very hard for a dishonest source to fake its reputation across the entire internet. A legitimate news organization has years of coverage, editorial corrections, and references from other credible outlets. A fake news site typically has almost no footprint beyond its own content.

Evaluating Sources: What Makes One Reliable?

Not all sources are equal. Here are the key factors that distinguish reliable sources from unreliable ones. Transparency: A reliable source tells you who owns it, who wrote the article, what their credentials are, and how to contact the editorial team. Anonymous content with no byline or publication information is a red flag. Track record: Has this source published accurate, corrected, and balanced content over time? Every outlet makes mistakes — what matters is whether they issue clear corrections. Trustworthy outlets have visible corrections policies. Primary sources: Reliable journalism links to or cites the original documents, studies, or statements it is reporting on. If an article says 'a new study found that...', a reliable source will name the study and let you find it yourself. Editorial independence: Is the source financially dependent on a single donor, political party, or corporation? Financial conflicts of interest can influence what gets covered and how. Legitimate outlets disclose their funding and ownership. Separation of news and opinion: Trustworthy outlets clearly label opinion and editorial content differently from reported news. When a source mixes the two without labeling them, be careful.

Dedicated Fact-Checking Tools

Several organizations exist specifically to investigate and rate the accuracy of public claims. Learning to use them is one of the most practical habits you can build. Snopes (snopes.com) has been investigating viral claims, urban legends, and political statements since 1994. It focuses especially on rumors and social media viral content. PolitiFact (politifact.com) focuses on claims made by politicians and public officials, rating them on a scale from True to Pants on Fire. FactCheck.org (factcheck.org) is run by a university and investigates political claims with detailed, documented analyses. Reuters Fact Check and AP Fact Check provide fact-checking from major wire services, covering a broad range of claims globally. For images, TinEye and Google Images reverse search let you find where a photograph has appeared before — which can immediately reveal that a supposedly current photo actually comes from a different event years earlier.