As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about blood and… Read More →

How much of a person’s body weight is made up of muscle? Can you learn to control your heart rate using your mind? How does taking steroids affect muscles—and why are steroids dangerous? What Read More →

How do living things reproduce? How do twins, triplets, and other multiple births happen? How does fertilization occur? Find out in this frank and accessible look at reproduction. Set up in a Read More →

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about sex and sexuality.… Read More →

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about sleep and dreams.… Read More →

As in previous books in this critically acclaimed series, Brynie polled hundreds of high school students across the country to find out what they wanted to know most about their immune… Read More →

3D printing was once only known through science fiction, such as Star Trek, the popular 1960s TV series. But inventors and engineers on Earth began experimenting in real life with 3D printing Read More →

Sure, we all know the planet is in trouble. We hear talk all the time about climate change, air pollution from cars, oil spills into oceans, trash overflowing into waterways, and toxic… Read More →

"Should you encounter any of the plants in this book, do not treat them lightly. They can kill you. Or cause you unbearable agony. Or land you in jail. Consider yourself warned." Explore the… Read More →

ADHD haunts children into adulthood," claimed a headline in USA TODAY, the Nation's No. 1 Newspaper. The inability to focus, sit still, or complete tasks makes it very difficult for people… Read More →

We already know what climate change is and many of us understand the human causes. But what will climate change do to our world? Who will be affected (spoiler: all of us!) and how will our… Read More →

In the United States and around the world, AIDS remains a critical health issue. Statistics from the U.S. Centers for Disease Control and Prevention show that 1.1 million people in the United Read More →

Allergens are all around us: in the air, on our pets, and in our food. According to USA TODAY, the Nation's No. 1 Newspaper, accidental exposure to food allergens leads to fifty thousand… Read More →

The increasing cost of health care in the United States and disappointment with conventional, or Western, medical practices has led people to seek different, more natural ways to maintain a… Read More →

In the borderlands between the United States and Mexico, America's largest cat—the jaguar—is fighting to regain its kingdom. Added to the endangered species list in 1997, the jaguar has… Read More →

"Anorexia, bulimia signal a troubled body and soul" cried a headline in USA TODAY, the Nation's No. 1 Newspaper. These serious eating disorders plague people of all ages, but mostly… Read More →

Millions of Americans—more than 16 percent of teens and adults—live with some type of anxiety disorder. Anxiety disorders are a group of disorders that include panic disorder, agoraphobia,… Read More →

"Houston, we've had a problem." On April 13, 1970, the three astronauts aboard the Apollo 13 spacecraft were headed to the moon when a sudden explosion rocked the ship. Oxygen levels began… Read More →

Ice in the Arctic is disappearing—and opportunity is calling. As climate change transforms the top of the world, warmer conditions are exposing a treasure trove of energy resources previously Read More →

In 2011 a computer named Watson outscored two human competitors on the TV quiz show Jeopardy! and snagged the million-dollar prize. Watson isn't the only machine keeping up with humans. The… Read More →

During the formation of the solar system, not all of the materials in the vast could of dust and gas were used. What happened to the remaining ice, metal, and rock? It formed what became… Read More →

More than twenty million people in the United States suffer from asthma, a disease of the lungs. In fact, asthma is the most common serious chronic disease among American children. Any person Read More →

What is matter made of? Scientists have been trying to answer this question for thousands of years. The concept of the atom—the tiniest fragment of a substance that still retains the… Read More →