Best Selling Books by Greg Roza

This accessible and engaging book teaches young readers the fundamentals of Neptune, one of the most intriguing planets in our solar system. They will learn about Neptune’s physical features, it’s super storms that can reach 1,500 miles per hour, its ring system, the Voyager missions, and its status as one of the gas giants. Since the book includes images directly from NASA and with those taken by the Voyager missions themselves, readers can feel like they’re really there, traveling to the planet and observing its physical features close up.

Though not available in pure form, potassium is all around us. It can be found in the earth and the oceans, and even in bananas. About 95 percent of the potassium mined today, however, is used in fertilizers. Written for the middle school reader, this is an engaging and accessible explanation of potassium that covers its atomic structure, unique chemical properties, and place in the periodic table.

Introduces readers to feral cats, including information on their physical characteristics, behavior, young, adaptation to urban environments, and how they live alongside people.

The world of optical, radio, and space telescopes will be on view for students in this fascinating story. From the first telescopes of Galileo and Newton to today’s giant twin Keck telescopes in Hawaii, readers will learn about the workings of lenses and mirrors. The book also looks at how a primary mirror is made, why the dish of a radio telescope needs to be wide, and how the Hubble Space Telescope gives astronomers sharper images than do telescopes on Earth.

One's knowledge of emergency lifesaving techniques can mean the difference between a close-call and a tragic fatality. With more and more kids involved in extreme sports, organized sports, skiing, hiking, skateboarding, rock climbing, canoeing and rafting, mountain biking, surfing, and other risky activities, it is imperative that they learn how to stay safe and treat themselves and others in the event of an accident. Covering everything from broken bones, bleeding, trauma, and shock, to poisoning, exposure, and burns, this book provides readers with the basic information they need to save lives in an emergency. Also includes urgent reminders to immediately seek medical and emergency assistance from qualified EMTs before trying lifesaving techniques yourself. Includes myths and facts about emergency lifesaving techniques and ten great questions to ask an emergency room doctor.

Most readers will recognize the name, but their information might be limited to Thomas Alva Edison's most famous inventions, including the light bulb, phonograph, and motion picture camera. This brief introductory biography introduces young readers to Edison's extraordinary life and brilliant mind. Beginning with his younger years, this book guides readers through his school and work experiences, highlighting his inspirations and other talents, such as salesmanship. An overview of his many later inventions make clear why he was called the "Wizard of Menlo Park" and has such a prominent place in history.

Black holes seem like the stuff of science fiction. It's incredible to think there's a mass in the universe with such a strong pull of gravity that not even light can escape it. But it's not science fiction, and there isn't just one black hole out there. Diagrams and photographs help readers explore concepts that even scientists can't fully explain yet. This book will encourage future astrophysicists that more is going on in the night sky than meets the eye.

Some of the most important contributors to the food chain are those creatures that help break things down: decomposers. If not for these birds, bugs, and worms organic matter couldn't be recycled back into nature. Readers will discover the different kinds of decomposers, how they do their job, and why it is so important. This fascinating book includes graphic organizers and annotated illustrations to better explain the food chain.

This fun paperback introduces the game of chess and its basic moves, then shows how to apply problem-solving skills to chess problems of varying difficulty. Includes detailed descriptions of each chess piece alongside some quick tips and tricks to make the best of each piece's weaknesses and strengths.

Going on vacation? From the planning stage on, this book explains ways to have a “green” vacation. Includes tips about things to do before leaving, such as canceling the paper and turning down the heat. Talks about environmentally friendly means of travel and things to do—and avoid—once reaching your destination. Ecotourism is also explored.

Hans von Ohain of Germany built the first working jet engine in 1937. This book describes some of the improvements made on jet planes since then, including the design of the Concorde and super jumbo jets such as the Airbus A380. Students will be introduced to the forces of flight—lift, thrust, drag, and weight—and to the movable parts of jets, including flaps, ailerons, and rudders and how they work.

Gives suggestions on how to prepare for and survive an earthquake.

Introduces the continent of Antarctica and some of its unique characteristics.

What is a modem? What is a network? Which carries more data at a faster rate—a telephone line, a cable television line, or a fiber optic cable? What is Simple Mail Transfer Protocol and Post Office Protocol? What is HTML and why is it used? This book is full of fabulous facts about computers and the World Wide Web that are sure to fascinate all students of technology.

Bacteria are amazing microorganisms. Their ability to move, multiply, and adapt make them some of the most fascinating subjects of biology. Readers take a look at these microscopic single-celled wonders and gain information about how they're able to survive in a variety of environments. Readers will be surprised to learn there are more bacteria in their body than human cells. Instructive photographs and diagrams accompany these facts and more.

Bundle up for a fact-finding mission to the Arctic. Readers will learn about Arctic plants and animals, and how they depend on each other for survival in the coldest ecosystem on Earth.

Famously feisty Tasmanian devils and perpetually ravenous hyenas may not seem to have a lot in common. However, both carnivores are ready to kill at a moment's notice. For those who wonder what would happen if one beast was pitted against another, this lively volume has the answers. It breaks down each hunter's adaptations that have helped it survive in its wild habitat, such as the Tasmanian devil's brawny bite and the hyena's staggering stamina. Incredible action photographs demonstrate key points in the text, giving readers a ringside seat to a wild fight to the finish.

Cutting and self-injury are delicate issues many teens face and this title offers nonjudgmental guidance and information to those who cut and self injure as well as to their friends and family. Often, the problem is connected to a deeper issue that, if not addressed, can lead to problems much more serious than those that are just skin deep. Topics addressed are why people self-injure, getting help, and learning to cope, all of which are covered with Rosen’s hallmark sensitivity to such serious health-related issues.

Victor the elephant loves Valentine's Day, so he goes out and gives valentines to all of his friends on the savanna.