¿Qué son los cuásares?

A guide divided into two different parts: introduction to the concepts of tension and deformation, and the different characteristic problems of material strength. Students will find a well-selected help and an original treatment to usual questions, necessary for their formation.

Presented in chronological order, this book teaches readers about the greatest accomplishments and discoveries of science from the Ancient Greeks to the present. They include geometry, vaccinations, the periodic table, the theory of relativity, Teflon, nano-technology, and much more.

Nick Lane expertly reconstructs the history of life by describing the ten greatest inventions of evolution (including DNA, photosynthesis, sex, and sight), based on their historical impact, role in organism today, and relevance to current controversies.

Sembrando un huerto se cultiva la conciencia ambiental. El huerto es vida, vida que se transforma, que crece y alimenta a otra vida. Los huertos urbanos son rincones amables donde la naturaleza tiene su espacio, lugares donde la ciudad resulta menos inhóspita. Los autores de esta obra, expertos horticultores ecológicos, resolverán todas tus dudas a medida que aprendas a cultivar tus propias hortalizas durante todo el año.