Los ciclos de vida — Las Mariposas

Did you know that liquids take the shape of their containers? If liquids get hot, they can become gases. Discover more interesting facts in Liquids, part of the States of Matter series of EYEDISCOVER books.

Did you know that pigs are some of the smartest animals on Earth? Pigs keep themselves very clean. Discover more about these farm animals in My Pig.

There is a bright light in the night sky. Sometimes it is round like a ball, sometimes it is a crescent, and sometimes it is not there at all! What is this strange and changing thing? It is the moon, of course! Read all about our moon and the moons surrounding other planets in this Spanish-translated book.

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.

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 ...

"Developed by literacy experts for students in grades three through seven, this book introduces young readers to the geography and culture of Nicaragua"--