The act of lateral reading is the process of verifying what you're reading while you're reading it. It allows you to read deeply and broadly while gaining a fuller understanding of an issue or topic and determining whether to trust the content as presented.
Vertical reading occurs when the reader simply reads the story or site without going further, taking it at face value as being reliable. The reader may use some superficial evaluation strategies to determine if the site is credible, such as reading the about page, looking at its URL extension (.edu, .org, .com, .gov), or assessing its advertising.
Use the strategies and ask the questions that professional fact-checkers use:
Ask the following:
from "Expand Your View with Lateral Reading," News Literacy Project.