If you're getting your news from a web search, or receiving it through a social media feed (from a news source you don't already know and trust) be extra cautious.
It may well be legitimate, but it could also be content generated by non-news organizations in order to drive eyeballs to ads or to spread untrue information to sway opinion. Many of these so-called "fake" news sites are disguised to resemble news publications and news networks we are already familiar with.
Scroll through these examples of fake news sites pulled together by CBS News.
See also: Spotting Fake News from FactCheck.org
1. Websites created to look like familiar mainstream news sites, e.g. "Boston Tribune."
Example: http://abcnews.com.co/ is not the ABC Network News http://abcnews.go.com, but the logo and the url are almost identical.
2. Advertisements designed to look like news stories: "native advertising".
Look for a corporate logo or tiny statement indicating Paid Post, Advertisement, or Sponsored by.
3. Satirical news (e.g. The Onion) .