La historia de William Hoy

It doesn't take a lot to conserve electricity. Taking action can be as simple as turning off the lights when you leave a room or using "people power" instead of cars to get around. Kids learn this and more about what they can do to help in 10 Things I Can Do to Save Electricity. Now in Spanish.

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.

Spanish English Bilingual children's book. Perfect for kids studying English or Spanish as their second language. This children's story has a message for children and parents alike, teaching kids compassion and creativity, while reminding parents the importance of quality time with their children.

California presenta respecto a España notables paralelismos y similitudes, tanto en parámetros geoclimáticos como incluso en muchos aspectos de su historia hidráulica o en lo referente a niveles de regulación y disponibilidad de caudales. Sin embargo, el profundo giro operado desde finales de los setenta en la política hidráulica norteamericana ha generado un nuevo modelo de planificación y gestión del agua que contrasta fuertemente con las concepciones e inercias desgraciadamente vigentes todavía en nuestro país. En California prevalece el valor ambiental y ecológico del agua. De ...