All organisms are composed of cells, but what is the definition of a cell? Can size, shape or function be used to distinguish cells from non-living biological systems such as a virus? Whatever the definition of a cell is, it can probably be contradicted by cells with unusual characteristics. For example, there are cells as long as a giraffe's neck while others are smaller than a mitochondrion. Sometimes it is hard to know the difference between an animal and a plant cell. Despite their diversity of shapes and sizes, cells are small-most of the time. Why has natural selection favored small cells? Would it be possible for big organisms to have big cells? It would seem safe to say viruses are small, except some are quite large. In the end, this book will provide evidence that cells are difficult to characterize and define even though they are the foundation of all living things.

The human specificity can be described by verticality/bipedalism, technique use, articulated language, high cognitive capacities, complex society at three levels: body, mind, social. In this book, is proposed an evolutionary process that make better understand how such humanity could have emerged in the long time (more than 6 million years). The process is based on a very early necessity to use technic for surviving correlated with neoteny which impulsed a darwinian evolutionary process, with four distinguished punctuation described as neotenizations.

California is one of the most ecologically rich and diverse regions of North America, and home to hundreds of species of mushrooms. In California Mushrooms, mycologist experts Dennis Desjardin, Michael Wood, and Fred Stevens provide over 1100 species profiles, including comprehensive descriptions and spectacular photographs of 650 species. Each profile includes information on macro- and micromorphology, habitat, edibility, and comparisons with closely related species and potential look-alikes.Although the focus of the book is on mushrooms of California, over 90% of the species treated occur elsewhere, making the book useful throughout western North America. California Mushrooms also provides information on when and where to find mushrooms; guidelines on how to collect and identify mushrooms; keys to species; and overviews of nomenclature and taxonomy, morphology and phylogeny, fungal ecology, biology of mushrooms, and mushroom toxins. This complete reference covers everything necessary for the mushroom hunter to accurately identify over 650 species.

Interpreting Biomedical Science: Experiment, Evidence, and Belief discusses what can go wrong in biological science, providing an unbiased view and cohesive understanding of scientific methods, statistics, data interpretation, and scientific ethics that are illustrated with practical examples and real-life applications. Casting a wide net, the reader is exposed to scientific problems and solutions through informed perspectives from history, philosophy, sociology, and the social psychology of science. The book shows the differences and similarities between disciplines and different eras and illustrates the concept that while sound methodology is necessary for the progress of science, we cannot succeed without a right culture of doing things.