Resultados para "Lenz" en Ciencias biológicas

Daniel K. Sodickson―a physicist and biomedical imaging innovator―explores the rich history and surprising future of vision, from the evolution of eyes to emerging high-tech devices. Beginning in the early oceans, when organisms first developed sight, The Future of Seeing tells the stories of the many remarkable tools people have invented to extend our natural vision.

Each day we are exposed to a myriad of natural and human-made chemicals in our food, drinking water, air, soil, at home or at the workplace-pesticide residues, food additives, drugs, household products-but how can we gauge the human health risk posed by these chemicals? Should we believe the somber headlines that depict a serious threat for humans and the environment, or should we follow the reassuring voices of others who claim that the angst is totally unfounded?

Systems biology came about as growing numbers of engineers and scientists from other fields created algorithms which supported the analysis of biological data in incredible quantities. Whereas biologists of the past had been forced to study one item or aspect at a time, due to technical and biological limitations, it suddenly became possible to study biological phenomena within their natural contexts. 

Lives of Weeds explores the tangled history of weeds and their relationship to humans. Through eight interwoven stories, John Cardina offers a fresh perspective on how these tenacious plants came about, why they are both inevitable and essential, and how their ecological success is ensured by determined efforts to eradicate them. Linking botany, history, ecology, and evolutionary biology to the social dimensions of humanity's ancient struggle with feral flora, Cardina shows how weeds have shaped - and are shaped by - the way we live in the natural world.

We live in a world that is always on, where everyone is always connected. But we feel increasingly disconnected. Why? The answer lies in our brains. Carl D. Marci, MD, a leading expert on social and consumer neuroscience, reviews the mounting evidence that overuse of smart phones and social media is rewiring our brains, resulting in a losing deal: we are neglecting the relationships that sustain us and keep us healthy in favor of weaker and more ephemeral ties. Rewired provides scientifically supported solutions for everyone who wants to restore their tech-life balance. 

In the past two decades, our understanding of the navigational and physiological feats that enable birds to cross immense oceans, fly above the highest mountains, or remain in unbroken flight for months at a stretch has exploded. What we've learned of these key migrations is nothing short of extraordinary. This breathtaking work of nature writing also introduces listeners to those scientists, researchers, and bird lovers trying to preserve global migratory patterns in the face of climate change and other environmental challenges.

Did you know... Medical interventions have become the third leading cause of death in America. An estimated 10 percent of Americans are implanted with medical devices -- like pacemakers, artificial hips, cardiac stents, etc. The overwhelming majority of high-risk implanted devices have never...

From the big bang to the origin and evolution of intelligent life in a search for the meaning of human existence, Why Are We Here?, by author Bruce Brodie, offers a look at evolution and the future of life on the planet.