Resultados para "Humo" en Ciencias biológicas

Where do we come from? How did our ancestors settle this planet? How did the great historic civilizations of the world develop? How does a past so shadowy that it has to be painstakingly reconstructed from fragmentary, largely unwritten records nonetheless make us who and what we are?

These 36 lectures bring you the answers that the latest scientific and archaeological research and theorizing suggest about human origins, how populations developed, and the ways in which civilizations spread throughout the globe.

Parents and parents-to-be are bombarded with information, from what to expect to what to do (and not to do) when it happens. But what they may not realize is that from the chemistry of pregnancy tests to the vacuum physics of breastfeeding, there is fascinating science at the heart of every aspect of creating and raising a new human.

This course chronicles the history of Earth and life on Earth from the point of view of the minerals that made it all happen. A major theme is how minerals and life coevolved, leading to the unprecedented mineral diversity on our world compared to the other planets in the solar system. Professor Hazen tells this epic story in 48 action-packed lectures that take you from the big bang to the formation of the solar system to the major milestones that marked the evolution of Earth and life.

Homo sapiens emerged as a species about 200,000 years ago and soon—with fire, simple tools, and an egalitarian social system—we inhabited every continent. But now our infinitely elaborated tools and our highly non-egalitarian social system threaten sustainability. Many at the bottom lose the desire to live, committing suicide or succumbing to drugs, alcohol, and obesity. What is Health? explains from the bottom up—molecules to society—how we reached this point.

Understanding our humanity - the essence of who we are - is one of the deepest mysteries and biggest challenges in modern science. Why do we have bad moods? Why are we capable of having such strange dreams? How can metaphors in our language hold such sway on our actions? As we learn more about the mechanisms of human behavior through evolutionary biology, neuroscience, anthropology, and other related fields, we're discovering just how intriguing the human species is.

Ever since Darwin and The Descent of Man, the existence of humans has been attributed to our intelligence and adaptability. But in Catching Fire, renowned primatologist Richard Wrangham presents a startling alternative: our evolutionary success is the result of cooking. In a groundbreaking theory of our origins, Wrangham shows that the shift from raw to cooked foods was the key factor in human evolution.

When are we responsible for our own actions, and when are we in the grip of biological forces beyond our control? What determines who we fall in love with? The intensity of our spiritual lives? The degree of our aggressive impulses? These questions fall into the scientific province of behavioral biology, the field that explores interactions between the brain, mind, body, and environment that have a surprising influence on how we behave.

Humans are primates, much like chimps—or so we've been continually told. Yet recent discoveries show that our species has a different brain design, function, and chemistry; different eating, sleeping, mating, and rearing patterns; a different metabolism; and a different physiology than apes. Nor is our behavior much like theirs, and we don't even have the feet made for climbing trees that define the primate order. Could it be that conceiving of ourselves as primates isn't helping us understand what it is to be human?

Ambika Kamath and Melina Packer reveal how scientists studying animal behavior have long projected human norms and values onto animals while seeking to understand them. When scientific studies conclude that these norms and values are natural in animals, it makes it easier to think of them as natural in humans too. And because scientists, historically and to this day, largely belong to elite, powerful segments of society, the norms and values embedded into animal behavior science match those of the already powerful.

What is human consciousness, and how is it possible? This question fascinates thinking people from poets and painters to physicists, psychologists, and philosophers. From Bacteria to Bach and Back is Daniel C. Dennett's brilliant answer, extending perspectives from his earlier work in surprising directions, exploring the deep interactions of evolution, brains, and human culture.

What happened to the ancient Egyptians? When their civilization fell, did the Egyptian people disappear? Or do their descendants exist to this day? What about the ancient Persians? Romans? Mayans? For years, the answers to these questions have been hidden. But no more. Nathaniel T. Jeanson, a Harvard graduate with a PhD in cell and developmental biology, has discovered a DNA-based, generation by generation family tree for global humanity. This tree uncovers the origin and fate of these ancient peoples—and connects them to peoples alive today.

Humans are a puzzling species. On the one hand, we struggle to survive on our own in the wild, often failing to overcome even basic challenges, like obtaining food, building shelters, or avoiding predators. On the other hand, human groups have produced ingenious technologies, sophisticated languages, and complex institutions that have permitted us to successfully expand into a vast range of diverse environments. What has enabled us to dominate the globe, more than any other species, while remaining virtually helpless as lone individuals?

In an age where technologies such as AI threaten to supplant human intelligence, an award-winning scientist offers a radical new view of our innate human technology and what we're truly capable of. There are rare moments in time when we make choices that irreversibly change the world, and our...

Physiology is the science of life, and sets out to understand how living things work and what makes them distinct from the non-living. It considers how our bodies are supplied with energy, how they maintain their internal parameters, the ways in which we gather and process information, the ways we take action, and the creation of new generations.

There is no one better qualified than Jared Diamond - renowned expert in the fields of physiology and evolutionary biology and award-winning author - to explain the evolutionary forces that operated on our ancestors to make us sexually different. With wit and a wealth of fascinating examples, he explains how our sexuality has been as crucial as our large brains and upright posture in our rise to human status.

Humans live in landscapes of make-believe. We spin fantasies. We devour novels, films, and plays. Even sporting events and criminal trials unfold as narratives. Yet the world of story has long remained an undiscovered and unmapped country. It's easy to say that humans are "wired" for story, but why? In this delightful and original book, Jonathan Gottschall offers the first unified theory of storytelling. He argues that stories help us navigate life's complex social problems.

In 2018, the first genetically modified babies were reportedly born in China, made possible by the invention of CRISPR technology in 2012. This controversial advancement overturned the preexisting moral consensus, which had held for over 50 years before: While gene editing an adult person was morally acceptable, modifying babies, and thus subsequent generations, crossed a significant moral line. John H. Evans here provides a meta-level guide to how these debates move forward and their significance to society.

Human Anatomy & Physiology - Part 2 is a college introductory-level text read in a conversational manner. Within each section key words and concepts are introduced and discussed. The audio format allows students to make the most of their time by giving them the freedom to study by listening.

Human Anatomy & Physiology, Part 1 is a college introductory-level text read in a conversational manner. Within each section key words and concepts are introduced and discussed. The topics covered in this book include: (1) Anatomical Positions; (2) Tissues; (3) The Integumentary System; (4) The Skeletal and Muscular Systems; (5) Bone Growth and Repair; (6) Nervous Tissue; (7) The Central Nervous System; (8) Nerves and Synapses; and (9) The Peripheral Nervous System.

A story of defiance and determination by a controversial scientist, this is Lee Berger's own take on finding Homo naledi, an all-new species on the human family tree and one of the greatest discoveries of the 21st century. In 2013, Lee Berger, a National Geographic explorer-in-residence, heard of a cache of bones in a hard-to-reach underground cave in South Africa. He put out a call around the world for petite collaborators - men and women small and adventurous enough to be able to squeeze through eight-inch tunnels to reach a sunless cave forty feet underground. It worked.