DE DEMÓCRITO A LAS ESTRELLAS

Charles Darwin stands as a towering figure in the history of science, who changed the direction of modern thought in establishing the basis of evolutionary biology. These letters offer a fascinating window onto his daily experience, scientific observations, personal concerns and friendships, affording a unique glimpse of Darwin as both naturalist and family man. From his early years at Edinburgh University up to the publication of The Origin of Species in 1859, the letters in this volume chart the most exciting years of Darwin's life, including the voyage of the Beagle and the subsequent...

El presente texto aborda el tema de la Farmacognosia como el estudio científico de la historia, cultivo, recolección, tratamiento, caracteres sensoriales, morfológicos, macroscópicos, microscópicos y químicos; incluye aislamiento, caracterización e identificación de los principios activos de las drogas de origen vegetal, animal y mineral.

With a new afterword, Why You Are Here- A speech on the opening of the COP26 climate summit As a young man, I felt I was out there in the wild, experiencing the untouched natural world - but it was an illusion. The tragedy of our time has been happening all around us, barely noticeable from day to day - the loss of our planet's wild places, its biodiversity. I have been witness to this decline. A Life on Our Planet contains my witness statement, and my vision for the future - the story of how we came to make this, our greatest mistake, and how, if we act now, we can yet put it right. We have...

La medicina cient fica moderna examinada, desde la perspectiva mexicana, as como lo ocurrido en el mbito de la ciencia m dica francesa en la poca en la que la medicina se consolida como una ciencia en la aplicaci n convergente de diversas disciplinas a lo largo del siglo XIX.