Young readers learn about the early traditions which have led to our present-day celebration of Thanksgiving.

Young readers learn about the early traditions which have led to our present-day celebration of Christmas.

A mouse with a human ear on its back. Cats that glow in the dark. Giant super salmon. These animals are just the stuff gross out stories and horror movies. They are real animals that have been altered by scientists. And some of these animals are alive today.

Martha Dandridge Washington became first lady on April 30, 1789. But before she became first lady, she was a wealthy plantation owner with two children to raise. Learn about her childhood, family life, and goals as first lady of the United States.

Eleanor Roosevelt became first lady on March 4, 1933. But before she lived at the White House, she was a teacher and activist who worked for women's rights. Learn about her childhood, education, and goals as first lady of the United States.

Young readers learn about the early traditions which have led to our present-day celebration of Halloween.

Drinking vomit. Breathing poisonous gasses. Creating two headed dogs. These mad acts aren’t just the stuff gross out stories and horror movies. They are real things that real scientists have done in the search for scientific answers.

Young readers learn about the early traditions which have led to our present-day celebration of Valentine's Day.

Hillary Clinton became first lady on January 20, 1993. But before she lived at the White House, she was a lawyer and advocate for children. Learn about her childhood, education, and goals as first lady of the United States.

Did you know that the Fowler's toad can lay 20,000 eggs? Meet friendly frogs, giant salamanders, and other amazing amphibians at the Smithsonian National Zoo in these first books reviewed by Smithsonian experts.

Martin Luther King Jr. led the American civil rights movement in the mid-1900s. His holiday honors this man who continues to inspire Americans to work toward equality more than 50 years after his death. Readers will learn about Martin Luther King Jr., the holiday named for him, and how they can continue to promote and celebrate equality today.

A world without telephones? Impossible for most young readers to imagine. Let them know they can thank inventor Alexander Graham Bell for every ringtone! Filled with facts and photos, Bell's story highlights the scientific process he followed, failures and all, from identifying a problem to getting his communication technology into the hands of users.