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How are polar bears related to pandas? For thousands of years, philosophers and scientists have tried to organize and understand, or classify, the relationships among Earth's animals and… Read More →

What are illicit drugs? Why do people use them? What are the effects on the body of using drugs? Are some drugs more dangerous than others? What is addiction? Why are some people able to stop Read More →

Since prehistoric times, people have been fascinated by electricity and magnetism. Ancient people marveled at the auroras—streaks of colored light that appear in the night sky near the poles. Read More →

Outraged people claimed that Darwin's theory had made humans the relatives of monkeys. Scientists were sure that species changed over time, but no one could explain how. In the 1800s, Charles Read More →

If a black dog and a white dog have puppies, what color will the puppies be? Genetic scientists have been trying to answer this question for hundreds of years. Genetics is the science of… Read More →

Genocide has become the human rights issue of our time. This book focuses on the genocides of the twentieth century, explaining what genocide is and discussing it in light of international… Read More →

Since prehistoric times, people have wondered what causes disease. Early people blamed evil spirits. Later, disease was thought to be caused by an imbalance of bodily fluids. By trial and… Read More →

Serena Stevens is already popular in her new school in the tiny Texas town of Rojo—so popular she has two guys interested in her. Self-assured Lance is a football star, and introverted Cam is Read More →

As USA TODAY, the Nation's No. 1 Newspaper, puts it, "anyone who has followed Jay-Z's career knows [that] the superstar born Shawn Corey Carter has long defied anyone who tried to pigeonhole… Read More →

Can one book really change the world? A handwritten manuscript by Marco Polo in 1288 did. Polo, son of a wealthy Italian merchant, wrote about his incredible experiences traveling to China… Read More →

Once considered the “poor man’s cocaine,” methamphetamine has seeped into the mainstream in the United States. It is estimated that more than 12 million people have tried the drug, and 1.4… Read More →

As USA TODAY, The Nation's No. 1 Newspaper, puts it, Nicki Minaj is a "hip-hop comet...a talented rhyme-spitter who fluidly shifts from hard-core grit to Barbie-doll cute." Growing up poor… Read More →

Author of the popular BookTok series The Inheritance Games Jennifer Lynn Barnes introduces us to . . . Nobody. There are people in this world who are Nobody. No one sees them. No one notices Read More →

For hundreds of years, people found the fossils of ancient sea creatures at the tops of tall mountains. Scientists puzzled over this problem. A fish couldn't have swum up a mountain. And how… Read More →

Since prehistoric times, people have wondered how the universe works. Early scientists studied how forces affect objects and watched how heavenly bodies move. In 1687 Isaac Newton published a Read More →

Becoming sexually involved with another person is a big step in your life. It’s something to think about on your own long before you have to make a decision with anyone, even the partner you… Read More →

"I cannot think that the world, as we see it, is the result of chance; & yet I cannot look at each separate thing as the result of design." English naturalist Charles Darwin wrote this in Read More →

Did you know that smoking is the most common drug addiction in the United States? Or that it can take only a single cigarette to become addicted? Packed with information on how smoking and… Read More →

Tests, rules, team tryouts, dating, injuries, illnesses, bullies—stress is with young adults every day. This highly readable book looks at the causes and consequences of stress, covering… Read More →

Can one man’s religious experience change the whole world? In the A.D. 600s, in the Arabian city of Mecca, a merchant named Muhammad began to receive and share messages from God. Muhammad… Read More →

Where did our universe come from? People have been trying to answer this question for thousands of years. The twentieth century brough new discoveries in physics and astronomy that led… Read More →

Could a few fleas really change the world? In the early 1300s, the world was on the brink of change. New trade routes in Europe and Asia brought people in contact with different cultures and… Read More →

As legend has it, a young prince, Alexander, once subdued a wild stallion others couldn’t control. Impressed by the youngster’s bravery, his father, King Philip of Macedonia, predicted that… Read More →