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CURRENT EVENT | March 31, 2020

Ancient Chewing Gum Holds DNA Clues

A chunk of chewed birch resin has revealed surprisingly detailed information about a woman who lived 5,700 years ago. Scientists investigated a brownish blob discovered at an archaeological site and were able to extract and analyze a complete strand of DNA that revealed details about the diet, health, and appearance of the Stone Age woman who had chewed it. Listen to learn why ancient people chewed birch pitch and how this very old piece of gum could inspire archaeologists to look in new places for clues to the past.

Story Length: 2:58

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SOURCE:

National Public Radio © 2019 National Public Radio, Inc. Used with the permission of NPR. All rights reserved.

12/17/2019


Listening Comprehension Questions

  • Why did ancient people chew birch pitch?
  • What did scientists learn from the woman’s DNA?
  • What did scientists learn from the microbes in the woman’s mouth?
  • How does the archaeologist interviewed believe that technology is changing her field?

Classroom Discussion Themes

  • What other ways can scientists learn about the lives of ancient people?
  • If future scientists analyzed a piece of gum that you chewed today, what might they learn about you?