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  • Caves are important natural features in Sequoia and Kings Canyon National Parks in California. Past studies of some of these…

    A Tale of Two Caves: How Is Hurricane Crawl Cave Different From Crystal Cave?

  • The Did You Feel It? (DYFI) system allows Internet users to report earthquake data when they feel an earthquake. The…

    All Over the Map: Investigating the Did You Feel It? Citizen Science System

  • The questions you will answer in this FACTivity are: How does the seismic data compare between different States? What is…

    Alternate FACTivity – All Over the Map

  • The purpose of this FACTivity is to demonstrate how house plants use water and compare this process with an outdoor…

    Alternate FACTivity – Under Where?

  • Investi-gator is a sister publication to Natural Inquirer, serving students in grades 4 or higher. In this Investi-gator edition, you…

    Animals and Ecosystems of the Southwestern United States Investi-gator (Rocky Mountain Research Station) – Vol. 3 No. 1

  • In the Western United States, shallow rocky soils and a dry climate often make it hard for new trees to…

    Are We Having Fungi Yet? Helping Young Trees Grow

  • In the Western United States, shallow rocky soils and a dry climate often make it hard for new trees to…

    Are We Having Fungi Yet? Helping Young Trees Grow (Spanish)

  • Frogs are a species of amphibian. In recent years, there has been a decline in the numbers of amphibians worldwide.…

    As the Frog Hops: What Routes Do Frogs Travel in Mountain Environments?

  • The scientists in this study developed a process to help managers identify management priorities. As conditions change over time, the…

    At Your Service: Developing Models to Help Natural Resource Managers Make Better Decisions

  • What is bioenergy? “Bio-” is related to living or once living things. Bioenergy is a source of energy that uses…

    Bioenergy – Vol. 9 No. 1

  • Help Busy Bee complete each statement by filling in the blanks for missing words. Use what you’ve learned about watersheds,…

    Busy Bee Word Challenge – Full Throttle Model

  • Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and…

    By the Light of the Silvery Minnow: Can Young Minnows Be Taught About Their Natural Foods?