Calentamiento global (Global Warming)

This book introduces children to fascinating figures throughout history. They include Ramses II, Moctezuma, Nostradamus, Albert Einstein, and Stephen Hawking.

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together they discovered two elements and won a Nobel Prize in 1903. (Later Marie won another Nobel award for chemistry in 1911.) She died in Savoy, France, on July 4, 1934, a victim of many years of exposure to toxic radiation.

Have you ever thought about how a soccer field is different from a football field? Or how a tennis court is different from a basketball court? Each sport has a surface with a purpose! Explore partitioned shapes with this Spanish math book that seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, sidebars, and math diagrams...

El derecho a la pereza es la obra más célebre de Lafargue, y es el texto más difundido de la literatura socialista a nivel mundial, después de Manifiesto del Partido Comunista, de Karl Marx y Friedrich Engels. Una obra controvertida y revolucionaria tanto para la derecha como para la izquierda. En su libro Paul Lafargue plasma claramente sus reflexiones contra el fervor por el trabajo, la productividad, y el crecimiento económico fanático que mostraban tanto la derecha como la izquierda. Lafargue observo que cuanto más trabajaba un obrero más miserable se volvía su vida, y aun así...