Trampas mentales

A closer look at the stomach and how it works with the digestive system to give the body the nutrients it needs to stay healthy.

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

"Breve explicación del propósito y uso de este libro. Antes que nada, lo primero que debemos dejar bien claro es que este Libro no es, en modo alguno, un diccionario lingüístico. Esto, que a simple vista pareciera ser contradictorio, ciertamente no lo es, ya que ni por su forma ni por su contenido ha pretendido regirse por las normas o modelos tradicionales de los diccionarios que todos conocemos y usamos; y porque además, siendo radicalmente honestos, no ha sido escrito por alguien que pretenda asumirse como lingüista (por lo menos, no un lingüista como algunos que conocemos ), ni...

November 1940. A circus parade walks through the streets of Warsaw, waving a flag and singing. They are 160 Jewish children, forced by the Nazis to leave their beloved orphanage. It's a sad occasion, but led by Doctor Korczak, their inspirational director, the children are defiantly joyful. Their new home is in the ghetto, a prison for Jews. Two years later they board the train that will carry them away to the death camps. Offered his freedom, Doctor Korczak refuses to abandon the children and proudly joins them on their last journey. This profoundly moving illustrated book is based on the...