Ronda que ronda la ronda

Clara y Jorge acaban de mudarse a una urbanización porque la convivencia con los vecinos del edificio donde vivían era insoportable. Esperan que ahora todo sea diferente, pero arrastran un secreto oscuro del que no pueden librarse y, aunque sus nuevos vecinos los acogen con entusiasmo, pronto descubrirán cosas terribles de su pasado que abrirán una grieta insalvable entre ellos. Los perros siempre ladran al anochecer es un relato de suspense que se lee de un tirón y que al mismo tiempo arroja luz sobre la condición humana, las dudas que lastran la existencia y la dificultad de enterrar...

For ages, the idea of machines that think and act on their own has gripped scientists, thinkers, and the general public. This book explores the history of artificial intelligence (A.I.), and how science fiction is quickly becoming science fact. It examines the technologies involved in A.I. and its inevitable effects on work, life, health, and many other aspects of human society. Rooted in history and science, this book provides an inside look at a topic that captivates engineers, scientists, and dreamers, but also raises important ethical issues and challenges how we see ourselves and our...

Not everyone in the United States is eligible to vote. Voting rules are different in every state. For federal elections, however, voters must have U.S. citizenship to vote. Voters must be 18 on or before the next Election Day to cast their ballot. People must live in their state for a certain period of time before being eligible to vote. All people wishing to vote must be registered by a certain date depending on which state they live in. This book explains who is eligible to vote in U.S. elections as well as who is not eligible to vote. Readers will make connections to the text through...

Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines Work uses simple text and full-color photographs to help ELL students understand the principles behind simple machines. Each volume includes three diagrams to enhance comprehension. The text uses authentic language and is designed to build reading skills as well as knowledge of basic science concepts.