Mientras arde Jerusalén..., nace un Evangelio diferente

Why do some things heat up quickly while others don't? How can heat cause matter to change form from solid to liquid to gas and back again? Heat cannot be seen, but it can easily be felt. Looking at different objects' molecular makeup, this book describes the fundamentals of heat and furthers understanding through a series of easy experiments.

Se sabe, aunque la Iglesia siempre ha pasado de puntillas sobre este hecho, que San Agustín, más tarde Padre de la Iglesia latina, tuvo en su juventud una amante que le dio un hijo al que amó con predilección. Vita brevis es la carta manuscrita que supuestamente Floria, su amante, le escribió al hilo de la lectura de sus Confesiones. En ella, con ironía y sarcasmo, critica a Agustín por haber abandonado el verdadero y auténtico amor humano para entregarse a uno divino, del que poco se sabe.

Poetic text recounts the childhood of the noted Spanish poet, including his love for the nature and folklore of his native Andalusia, his introduction to music and literature at home, and his health problems.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...