Exploremos el ciclo de la roca (Exploring the Rock Cycle)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

Equality is a contentious issue in our society today. This is why it's important for students to be given information related to equality so they can come to reasonable conclusions of their own. Using age-appropriate language, this book discusses equality in a number of different forms and touches upon why equality is so important in a democracy. The text also explores how extreme equality, like most extremes, could be a bad and unrealistic idea. Readers will gain enough information to understand and think about this complex idea for themselves.

★“Fascinating...An appealing resource sure to spark an interest in biomimicry, from casual readers to budding scientists. Recommended for all libraries.”—School Library Journal, starred review Did you know that lamps can be powered by glowing bacteria instead of electricity? That gloves designed like gecko feet let people climb straight up glass walls? Or that kids are finding ways to make compostable plastic out of banana peels? Biomimicry, the scientific term for when we learn from and copy nature, is a revolutionary way to look to nature for answers to environmental problems such...

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...

Pocos escritores han tenido una vida tan paradójica como H.P. Lovecraft, el excéntrico y solitario «escritor de espantos» de Providence, considerado por todos como el gran maestro del horror sobrenatural. Sin embargo, Lovecraft murió en el más completo anonimato, sin haber visto editado en vida un volumen de sus narraciones. Fue un misántropo incurable, y sin embargo era apreciado por todos los que le conocieron y se vio rodeado por un círculo de fieles admiradores que lucharon denodadamente para rescatar su obra del olvido. Fue un gran materialista científico enfangado en...