T.J. Resler is an American author with a passion for telling stories. A former journalist, professor and research analyst, she researches and writes a wide variety of nonfiction and fiction for kids and adults. In this article, she describes what scientists have learned about how dinosaurs evolved, or changed, into modern birds over millions of years. As you read, take notes on what scientists have learned about Archaeopteryx. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

Jacqueline Pratt-Tuke is a science and humanities teacher based in Washington, D.C. Many animal species, or groups of similar living things, are in danger of going extinct, or no longer existing on Earth. In this text, Jacqueline Pratt-Tuke explains the purpose of the International Union for Conservation of Nature's (IUCN) Red List. As you read, take notes on why the IUCN’s Red List is important. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

Jacqueline Pratt-Tuke is a science and humanities teacher based in Washington, D.C. Jaguars are large cats that are in danger of going extinct, or no longer living on Earth. In this informational text, Pratt-Tuke describes the threats jaguars face and what is being done to help them. As you read, take notes on how human actions harm jaguars. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

T.J. Resler is an American author with a passion for telling stories. A former journalist, professor and research analyst, she researches and writes a wide variety of nonfiction and fiction for kids and adults. In this article, she describes what scientists can learn from fossilized, or left behind traces of, animal poop. As you read, take notes on why people are interested in fossilized poop. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

The unjust practice of owning other people is called slavery. From 1619-1865, many Black people were brought to America to work without pay for white people. This short informational text explains the history of Juneteenth, a holiday that celebrates emancipation, the end of slavery in the United States. As you read, take note of how Juneteenth became a holiday. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

In this informational text, Summer Blais explains how the ancient Egyptians treated their pets. As you read, take notes on the ancient Egyptians’ actions toward their pets. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

McMurdo Station is the United States Antarctic research station, where scientists and volunteers come to learn more about this special part of the world. In this text, Christy Mihaly tells about Elaine Parker's experience working and living at this remote, or far away, location. As you read, take notes on details that describe the setting. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

Natural disasters like earthquakes, tsunamis, and hurricanes happen all over the world and cause huge amounts of damage. In this article, Marcia Amidon Lusted wonders if watching animals closely would help us better predict when these disasters will happen. As you read, take notes about whether animals are better able to predict natural disasters than humans. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/

T.J. Resler is an American author with a passion for telling stories. A former journalist, professor and research analyst, she researches and writes a wide variety of nonfiction and fiction for kids and adults. In this article, she describes what scientists have learned about the Tyrannosaurus rex. As you read, take notes on how paleontologists’s ideas about T.Rex have changed over time. The material is distributed in accordance with the CC BY-NC-SA. See details at: https://creativecommons.org/share-your-work/cclicenses/