Las dos verdades

Todo el mundo habla del cambio climático, pero ¿es verdad todo lo que dicen sobre él? Palmeras en el Polo Norte nos responde a algunas preguntas que todos nos hacemos: ¿cómo está cambiando nuestro entorno? ¿A quién le va a afectar esa transformación y por qué? Este libro habla de la contaminación, de devastadores huracanes, de animales extinguidos y de osos polares; también de volcanes, icebergs, mamuts y científicos que pasan mucho frío; en definitiva, de un fenómeno que nos afecta a todos y de lo que estamos a tiempo de hacer por nuestro planeta.

Profiles a Mexican woman who saved more than twenty Texan rebels taken prisoner during the Texas Revolution from being shot under General Santa Anna's orders.

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.

Lara Finch lives a lie. Everyone thinks she is happily married to the faithful Sam. She is actually super bored and misses working. Behind Sam's back, she takes a job in London. Twice a week she takes the sleeper train, where she meets Ellen and Guy. One Friday, Lara disappears from the train without a trace. Her friend Iris does not believe the official story she is told about the disappearance and decides to start her own investigation. Iris cannot believe what she finds out.