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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The scientists in this study were interested in knowing whether humans and other animals can help disturbed areas of land…The scientists in this study were interested in knowing whether humans and other animals can help disturbed areas of land to become healthy ecosystems again. A mining company in Brazil... -
Guanica Forest is a tropical dry forest in the southwest corner of Puerto Rico. In 1981, the United Nations recognized it for being one of…Guanica Forest is a tropical dry forest in the southwest corner of Puerto Rico. In 1981, the United Nations recognized it for being one of the best examples of a dry tropical forest. The scientists in this... -
Pine forests are common in the tropical Caribbean. Usually, these pine forests also have an understory of broad-leafed trees. Broad-leafed…Pine forests are common in the tropical Caribbean. Usually, these pine forests also have an understory of broad-leafed trees. Broad-leafed trees are trees with flat leaves. The pine forests are... -
Tropical forests are sometimes cut down so that humans can use the trees for wood and other products. Then, the cleared land is made into…Tropical forests are sometimes cut down so that humans can use the trees for wood and other products. Then, the cleared land is made into a pasture so that cattle can be raised for human consumption. When... -
In 1956, the United States established a national park on one of the Virgin Islands. The United Nations named the national park a Biosphere…In 1956, the United States established a national park on one of the Virgin Islands. The United Nations named the national park a Biosphere Reserve in 1976. To help manage the park as a Biosphere Reserve,... -
In this study, the scientists studied trees growing on Puerto Rico, an island in the Caribbean Sea. The scientists wanted…In this study, the scientists studied trees growing on Puerto Rico, an island in the Caribbean Sea. The scientists wanted to know if different trees contribute different amounts of nutrients... -
Tropical streams provide many benefits to people and animals. For river shrimp that spend part of their life in the…Tropical streams provide many benefits to people and animals. For river shrimp that spend part of their life in the mountain streams, the streams provide a place to reproduce and... -
When pairs of flammulated owls get ready to reproduce, they must find a place to build their nest. They need…When pairs of flammulated owls get ready to reproduce, they must find a place to build their nest. They need a location convenient to a food supply suitable for baby... -
Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave…Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave like other salmonids. Other salmonids had been found to swim... -
Some scientists think that wildlife is mostly dependent on the immediate natural area in which it lives. The scientist in…Some scientists think that wildlife is mostly dependent on the immediate natural area in which it lives. The scientist in this study was interested in exploring this idea because she...
