Articles
Explore a variety of topics in our article library. Each article in a monograph or journal is based on a published, peer-reviewed study and includes an activity, reflection questions, and more. Articles in our Readers introduce the work of a scientist to students from kindergarten to 2nd grade.
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Across the planet, different types of forests are found. One reason different forest types exist is because they grow under…Across the planet, different types of forests are found. One reason different forest types exist is because they grow under different climates. Another reason is that human activities have changed... -
Throughout history, humans have cut down trees and planted trees to meet their needs. This is one of the benefits…Throughout history, humans have cut down trees and planted trees to meet their needs. This is one of the benefits of trees! If humans remove more trees than they plant,... -
In recent years, the amount of carbon dioxide in the atmosphere has been rising. Scientists believe that higher levels of carbon…In recent years, the amount of carbon dioxide in the atmosphere has been rising. Scientists believe that higher levels of carbon dioxide in the atmosphere are causing the world’s climate to... -
Forests provide many benefits to people and other animals. For forests to provide these benefits, however, they must be managed…Forests provide many benefits to people and other animals. For forests to provide these benefits, however, they must be managed so that they remain healthy and sustainable. Although there are... -
The scientists in this study wanted to know how rising levels of carbon dioxide in the troposphere might affect the…The scientists in this study wanted to know how rising levels of carbon dioxide in the troposphere might affect the amount of carbon sent belowground by trees and made available... -
The nun moth is a major pest of conifers and an occasional pest of broadleaf trees in Europe and Asia.…The nun moth is a major pest of conifers and an occasional pest of broadleaf trees in Europe and Asia. The scientist in this study wanted to discover which trees... -
The Asian long-horned beetle is an insect pest that was discovered in New York in 1996 and Chicago in 1998. It arrived…The Asian long-horned beetle is an insect pest that was discovered in New York in 1996 and Chicago in 1998. It arrived in the United States on wood packing material that was being used... -
In the Western United States, spotted knapweed is one of the most widely found nonnative plants. Spotted knapweed was brought to the United…In the Western United States, spotted knapweed is one of the most widely found nonnative plants. Spotted knapweed was brought to the United States from Eastern Europe in the early 1900s. To control the... -
The Oriental bittersweet is a vine that was transported to the United States from Asia in 1860. Oriental bittersweet escaped from gardens and…The Oriental bittersweet is a vine that was transported to the United States from Asia in 1860. Oriental bittersweet escaped from gardens and has spread into natural areas where it is not native. When... -
The scientists were interested in discovering whether the Pacific tree frog population might also be affected by the presence of nonnative trout, similar…The scientists were interested in discovering whether the Pacific tree frog population might also be affected by the presence of nonnative trout, similar to the way these trout had affected the mountain yellow-legged frog population....
