21 science ‘facts’ you might have learned in school that aren’t true

  • Science is an ongoing process, which means new discoveries often upend old theories.
  • Contrary to what many people learned in school, Pluto is not a planet (well, sort of), dinosaurs didn’t look like the pictures in your textbook, and atoms aren’t the most basic components of matter.
  • Here are some science “facts” you may have learned in school that aren’t true.
  • Visit Business Insider’s homepage for more stories.

If you were to file into a classroom and open your notebook for science class today, the subject matter might be a little different from when you were in school.

Our body of scientific knowledge is constantly growing and changing. New discoveries or studies often lead to changes in old theories and sometimes even invalidate them altogether. That means some of the “facts” you learned in school aren’t necessarily true anymore.

For example, dinosaurs probably didn’t look the way your textbook depicted them. The origins of Homo sapiens aren’t as neat as the timeline you might have learned. And many of the nutrition and exercise guidance from your health classes has been debunked.

Here are some science facts you may have learned in school that aren’t true anymore.

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