Tecnología para todos: Wifi en todo el mundo (Technology For All: Wi-Fi Around the World)

La historia de los avances más importantes de la humanidad como nunca te la han contado. ¿Qué tiene que ver Tales de Mileto, el primer filósofo de Occidente, con el wifi? ¿Qué elemento de la tabla periódica sirve para preparar deliciosos postres y enviar naves al espacio exterior? ¿Qué tiene que ver la invención del acueducto con el teatro callejero? ¿Por qué las mujeres son las principales precursoras del arte? ¿Cómo la vitamina C nos ayudó a medir la distancia entre la Tierra y el Sol? ¿Por qué sin la agricultura no hubiéramos desarrollado sentido de la moda? Episodios...

From Mexico to the tip of South America, Latin America features varied scenery, including deserts, grasslands, plains, and mountains. Some are extreme: The Andes is the world's longest mountain range, and the Atacama Desert has not had rain for over 400 years! Latin America's remarkable landscape is an essential factor in its surprisingly different climatic zones. This insightful volume offers a comprehensive tour of the many vibrant countries of this fascinating region, highlighting its most striking areas in vivid photographs. It is also an inviting exploration of geography, natural...

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...