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  • PDF preview of Caves and Karst crossword.
    After reading the Caves and Karst edition of Natural Inquirer, test your knowledge with a crossword puzzle.
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    Crossword – Caves and Karst

  • tree root diagram
    The scientists in this study wanted to know how rising levels of carbon dioxide in the troposphere might affect the…
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    FACELook! Exploring the Relationship Between Carbon, Photosynthesis, and the Roots of Trees

  • Black and white illustration of a giant watering a forest with a watering can.
    Until the early 1950s, people mined copper, gold, and silver in the Beartooth Mountains in Montana. During mining operations, the…
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    Let Nature Take Its Course: Helping the Environment Take Care of Itself

  • PDF preview of the Spanish version of "Let Nature Take Its Course"
    Until the early 1950s, people mined copper, gold, and silver in the Beartooth Mountains in Montana. During mining operations, the…
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    Let Nature Take Its Course: Helping the Environment Take Care of Itself (Spanish)

  • different species of fish swimming
    The scientists in this study were asked to develop information about the status of and trends in aquatic animal species populations across the United States.…
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    One Fish, Two Fish, Red Fish–No Fish? The Current Situation and Possible Future of Aquatic Animals in the United States

  • different species of fish swimming
    The scientists in this study were asked to develop information about the status of and trends in aquatic animal species populations across the United States.…
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    One Fish, Two Fish, Red Fish–No Fish? The Current Situation and Possible Future of Aquatic Animals in the United States (Spanish)

  • The cover for the 'Tropic Topic' article. The main image is a photo of exposed limestone karst pavement.
    The scientists in this study wanted to compare the chemistry of soils and leaves in Puerto Rico’s northern wet and…
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    Tropic Topic: What Is Known About the Limestone Zone?

  • PDF preview of the word search for "Let Nature Take Its Course"
    After reading “Let Nature Take Its Course,” try to complete this word search using glossary terms from the article.
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    Word Search – Let Nature Take Its Course

  • PDF Preview of One Fish, Two Fish Word Search
    Test your knowledge of freshwater, aquatic species, habitat, and conservation with a word search.
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    Word Search – One Fish, Two Fish, Red Fish–No Fish?

  • Front cover of National Inquirer with snapshots of different forests
    In this edition of Natural Inquirer, you will learn about the world’s forests. Every 5 years the Food and Agriculture…
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    The World’s Forests 2 – No. 15

  • The cover the The Natural Inquirer issue: The World's Forests. It's a green cover with four polaroid photos, highlighting different forest landscapes.
    This edition of Natural Inquirer presents the results of a worldwide effort to understand the world’s forests, organized by the…
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    The World’s Forests 1 – Vol. 11 No. 1