Describes various types of fuel cells and their functions, looks at some of the obstacles that stand in the way of using hydrogen fuel cells as a source of alternative energy, and discusses the future
Describes various types of fuel cells and their functions, looks at some of the obstacles that stand in the way of using hydrogen fuel cells as a source of alternative energy, and discusses the future
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
Explains the link between DNA, genetics, and heredity, describes how DNA works using RNA, and presents the applications of using DNA in forensic science and genetic engineering.
While offering clear, step-by-step explanations of scientific principles, the titles in this series also discuss the social significance and history of each subject using the most up-to-date research
Briefly introduces ways in which life was different in the past, such as farmers using hand-held plows instead of tractors, in a text that incorporates phonics instruction.
Explores the different types of natural resources, including renewable and nonrenewable and discusses conservation of resources and alternative sources.
So people call you shy and quiet? That's OK! Lots of people are shy, introverted, or have social anxiety disorder. In fact, most of those people grow up to be happy and successful. This books helps re
She/he/they/them. Why do we use gender pronouns? And why do some people wish to be referred to as "they"? What is gender identity all about? Students will learn to understand these terms and the reaso
More than 130 people a day in the U.S. die from opioid overdoses. Addiction to legal and illegal opioids has been declared a national crisis. The U.S. spends about $78.5 billion a year on treatment, c
A raging wildfire burns thousands of homes. A violent earthquake creates a giant tsunami that destroys countless lives. A giant tornado wipes a small town off the map. Discover the true stories of peo
Immigration is a hot topic in the United States. What kind of immigration should be allowed? How should immigrants who have come into the United States illegally be treated? What about the DREAMers? R
Hate crime in the United States is on the rise. The FBI has reported that hate crimes rose by 17 percent in 2017, increasing for the third straight year, and the trend continued into 2018 and 2019. Th
Imagine being lost near the North or South poles. All around you is nothing but snow and ice as far as you can see. What would you do? Discover the true tales of daring people who survived through bit
Life on the American frontier wasn't easy. Pioneers had to deal with tough challenges including rough terrain, extreme weather, starvation, and dangerous animals. But in spite of the hardships, people
From pasta to paper, the inventions of the Ancient Chinese remain part of everyday life in our modern world. Learn how items like wheelbarrows, the first toothbrushes, and early earthquake detectors h
We celebrate the Ancient Romans for contributions they made to modern engineering and architecture, but their impact is felt in even the smallest details of everyday life. Discover how inventions like
Every four years, the world celebrates one of the most exciting contributions of the Ancient Greeks: the Olympic Games. That, of course, is not all this great civilization left behind. From theater to
The Ancient Egyptians are famous for their pyramids and mummies, but how do these ancient items impact your life today? From hieroglyphs evolving into emojis and kohl around the eyes evolving into eye
On-point historical photographs combined with strong narration bring the story of CNN to life. Kids will learn how Ted Turner developed the idea of a 24/7 news network, which was unheard of at the tim
On-point historical photographs combined with strong narration bring the story of the civil rights marches to life. Kids will learn about the way in which Southern states kept African Americans from v
On-point historical photographs combined with strong narration bring the story of the Challenger explosion to life. Kids will learn about how it happened, the subsequent investigation into its causes,
On-point historical photographs combined with strong narration bring the story of the moon landing to life. Kids will learn about the cold war tensions between the US and the USSR that led to the spac
Embarrassing and awkward situations happen to everyone. But to some people, everyday situations can feel awkward and embarrassing. From going to a new place for the first time and joining a new sport
Describes the history of the Department of Education, and how it has evolved, what the pressing issues are today, and what lies ahead in the near future. Takes a potentially dry topic and makes it acc
These days it seems everyone is signing the praises of Alexander Hamilton, but what's the all the fuss about? After all, Hamilton was never a president, nor was he a beloved figure in his time. After
Thomas Jefferson set the course for a new nation ruled by and for the people. In the Declaration of Independence, his words explained that all people are created equal and all deserve life, liberty, a
Shy? Introverted? Social anxiety? What does it all mean and what's the difference among these? This book introduces readers to all they ways that a person can be "shy", "introverted", and "anxious". I
Describes the history of the Department of Homeland Security, and how it has evolved, what the pressing issues are today, and what lies ahead in the near future. Takes a potentially dry topic and make
Describes the history of the Department of Energy, and how it has evolved, what the pressing issues are today, and what lies ahead in the near future. Takes a potentially dry topic and makes it access
