Henry Carter Hull

Oumuamua is a space rock that formed around another star. Of the 10,000 space objects that have hurled past our Sun, this rock provides some proof that there are planets similar to Earth outside our solar system. This intriguing book reveals to young space explorers the secrets contained in the rocks that fly around in space.

This book takes a look at what a space home might look like and what it would take to live on Mars - the Red Planet (or any other place in space, for that matter). From the Mars ice home of the future to a make-your-own project, this book will enthrall and inspire readers and future engineers.

How was the solar system created? Why are the Sun and Moon the same size in the sky? These are just some of the questions answered in this exciting book about our seemingly endless solar system. Readers will love the problem-solving focus that makes space exploration an adventure in innovation.

The earliest humans understood matter on a very basic, practical level. Through trial and error they determined which rocks could make good spearheads and good pounding or grinding stones. The Bronze Age began about 2000 BCE when rocks containing copper and tin were heated together. The combination of the two metals yielded the alloy bronze. Metals played a significant role in the growth of chemical knowledge. Important questions were posed-what exactly...

Does bottled water do more harm than good? Should clear-cutting for agriculture be allowed? Every day, we hear arguments about environmental issues in the media. This book gives readers the tools to make sense of and evaluate some of these arguments. Using relatable and accessible environment-related examples, this book introduces readers to the parts of an effective argument and prompts them to use the knowledge they have gained to evaluate the effectiveness...

"A compelling look at the origins of and the ongoing unique relationship between humans and dogs ... [a] lively blend of science and history."-Kirkus Reviews (starred review) We know dogs are our best animal friends, but have you ever thought about what that might mean? Fossils show we've shared our work and homes with dogs for tens of thousands of years. Now there's growing evidence that we influenced dogs' evolution-and they, in turn, changed...

Quietly, without most people noticing, the population of giraffes in the wild has decreased by nearly 40 percent since 1985. Giraffes have disappeared entirely from seven countries where they used to live. Researchers believe fewer than 98,000 exist in the wild-fewer even than endangered African elephants. In 2016, the International Union for the Conservation of Nature added giraffes to the organization's Red List of Threatened Species. What is causing...

How have oil and energy pipelines become one of the most divisive political issues today? Using fact-based analysis, this title explores the issues that have sparked environmental and economic debate and protest.

Sharks are in trouble. Fifty shark species are at high risk of extinction, and another sixty-three are threatened. Discover the work of scientists and conservationists as they study shark biology and morphology; research migration, feeding, and mating patterns; delve into human, climate, and other threats to shark habitat; and develop sophisticated technologies to aid sharks and shark research. See how scientists also educate the public about real...

Hurricane Harvey takes an in-depth look at the destruction wrought by 2017's Hurricane Harvey in Texas and the Gulf Coast and the ensuing cleanup efforts. Features include essential facts, a glossary, selected bibliography, websites, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.