Comenzó con una pizza (It Started With Pizza)

Many animals are at risk of becoming extinct, or no longer part of the animal kingdom. When animals' habitats are destroyed or damaged, they can die because of lack of food and space to live. Forest habitats are very often destroyed because we cut down trees for wood. Some endangered animals are the Sumatran tiger, the ivory-billed woodpecker, the northern white rhinoceros, and the black-footed ferret. There are many ways to help save endangered species such as recycling and not polluting the environment.

Wildlife scientists study animals and plants, and they learn about endangered animals and how to help save them. Many times animals are tagged to study them and track them. Dr. Ian Stirling studies polar bears and retrieves data by observing them throughout the year. Dr. Jane Goodall studied chimpanzees all her life and learned many interesting things about the way they live, which is much like humans. She believes that we can help animals and promote peace in the world.

Este libro reúne tres cuentos que transcurren en un viejo edificio de la Ciudad de México, protagonizados por los niños del tercer patio, acompañados de dos heroínas: Pau y Zitelina. En "El Pato cabalga", las diabluras de los chiquillos en la azotea terminan con la elevación al cielo de El Pato, el más travieso de todos. En "El secreto de la señora", Pau descubre el misterio que guarda celosamente la señora elegante, la dueña del edificio. Mientras que en "El esqueleto de Judy", los miembros del Club de Tinaco conspiran para rescatar el esqueleto de una elefanta llamada Judy (que se ...

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

¿Te gustan las fiestas? Aprende todo acerca del cómo y el por qué la gente celebra diferentes fiestas.

¿Crees que las cebras tienen rayas porque escaparon de una cárcel? ¿O que los cocodrilos lloran por miedo al agua? En este libro encontrarás estas y muchas más respuestas locas (además de la verdadera, claro) a las preguntas más habituales sobre animales...