A full Rails application probably has less total code than the XML you'd need to configure the same application in other frameworks. With this book you'll learn how to use "ActiveRecord" to connect business objects and database tables. No more painful object-relational mapping. Just create your business objects and let Rails do the rest. You'll learn how to use the "Action Pack" framework to route incoming requests and render pages using easy-to-write templates and components. See how to exploit the Rails service frameworks to send emails, implement web services, and create dynamic, user-centric web-pages using built-in Javascript and Ajax support. There are extensive chapters on testing, deployment, and scaling. You'll see how easy it is to install Rails using your web server of choice (such as Apache or lighttpd) or using its own included web server. You'll be writing applications that work with your favorite database (MySQL, Oracle, Postgres, and more) in no time at all. You'll create a complete online store application in the extended tutorial section, so you'll see how a full Rails application is developed---iteratively and rapidly. Rails strives to honor the Pragmatic Programmer's "DRY Principle" by avoiding the extra work of configuration files and code annotations. You can develop in real-time: make a change, and watch it work immediately. Forget XML. Everything in Rails, from templates to control flow to business logic, is written in Ruby, the language of choice for programmers who like to get the job done well (and leave work ontime for a change). Rails is the framework of choice for the new generation of Web 2.0 developers. Agile Web Development with Rails is the book for that generation, written by Dave Thomas (Pragmatic Programmer and author of Programming Ruby) and David Heinemeier Hansson, who created Rails.

    Chaotic politics. Billionaire entrepreneurs. Award-winning journalist Brendan Borrell brings the defining story of our times alive through compulsively readable, first-time reporting on the players leading the fight against a vicious virus. The First Shots, soon to be the subject of an HBO limited series with superstar director and producer Adam McKay (Succession, Vice, The Big Short), draws on exclusive, high-level access to weave together the intense vaccine-race conflicts among hard-driving, heroic scientists and the epic rivalries among Washington power players that shaped 18 months of fear, resolve, and triumph. From infectious disease expert Michael Callahan, an American doctor secretly on the ground in Wuhan in January 2020 to gauge the terrifying ravages of Disease X; to Robert (Dr. Bob) Kadlec, one of Operation Warp Speed’s architects, whose audacious plans for the American people run straight into the buzz saw of the Trump White House factions; to Stéphane Bancel of upstart Moderna Therapeutics going toe-to-toe with pharma behemoth Pfizer, The First Shots lays bare, in a way we have not seen, the full stunning story behind the medical science “moon shot” of our lifetimes.

    Internet pioneer and renowned filmmaker Tiffany Shlain takes us on a provocative and entertaining journey through time and technology, introducing a strategy for living in our 24/7 world: turning off all screens for twenty-four hours each week. This practice, which she’s done for nearly a decade with her husband and kids, has completely changed their lives, giving them more time, productivity, connection, and presence. She and her family call it “Technology Shabbat.” Drawn from the ancient ritual of Shabbat, living 24/6 can work for anyone from any background. In this “useful and much-needed guide to turning the clock back to a less frazzled pre-Internet and -smartphone day” (Kirkus Reviews), Shlain shares her story, offers lessons she has learned, and provides a blueprint for how to do it yourself. Along the way, she delves into the neuroscience, philosophy, psychology, and history of a weekly day of rest across cultures, making the case for why we need to bring this ritual back. A compelling personal story and a fascinating, far-reaching examination of the complex world we’ve created, 24/6 is a call to regain “the essential dignity of being human in a digital age” (Douglas Rushkoff, author of Team Human).

    . . Sanghavi is a vivid and effortless teller of human tales and quite evidently a special doctor, too." —Atul Gawande, author of ComplicationsIn this compelling book, Dr. Darshak Sanghavi takes the reader on a dramatic tour of a child's eight vital organs, beginning with the lungs and proceeding through the heart, blood, bones, brain, skin, gonads, and gut.Along the way, we meet children and families in extraordinary circumstances—a premature baby named Adam Flax who was born with undeveloped lungs, a teenage boy with a positive pregnancy test, and a young girl who keeps losing weight despite her voracious appetite. In a deeply personal narrative, Sanghavi provides a richly detailed—and humanized—portrait of how the pediatric body functions in both sickness and health.

    In June 1962, a young biologist in Philadelphia, using tissue extracted from an aborted fetus from Sweden, produced safe, clean cells that allowed the creation of vaccines against rubella and other common childhood diseases. Two years later, in the midst of a devastating German measles epidemic, his colleague developed the vaccine that would one day wipe out homegrown rubella. The rubella vaccine and others made with those fetal cells have protected more than 150 million people in the United States, the vast majority of them preschoolers. The new cells and the method of making them also led to vaccines that have protected billions of people around the world from polio, rabies, chicken pox, measles, hepatitis A, shingles and adenovirus. Meredith Wadman’s masterful account recovers not only the science of this urgent race, but also the political roadblocks that nearly stopped the scientists. She describes the terrible dilemmas of pregnant women exposed to German measles and recounts testing on infants, prisoners, orphans, and the intellectually disabled, which was common in the era. These events take place at the dawn of the battle over using human fetal tissue in research, during the arrival of big commerce in campus labs, and as huge changes take place in the laws and practices governing who “owns” research cells and the profits made from biological inventions. It is also the story of yet one more unrecognized woman whose cells have been used to save countless lives. With another frightening virus imperiling pregnant women on the rise today, no medical story could have more human drama, impact, or urgency today than The Vaccine Race.

    They reveal why general anesthesia is as dangerous as a parachute jump, giving birth in the US is nearly twice as risky as in the UK, and that the radiation from eating a banana shaves 3 seconds off your life. An entertaining guide to the statistics of personal risk, The Norm Chronicles will enlighten anyone who has ever worried about the dangers we encounter in our daily lives.

    While some attribute this rise to increased awareness and diagnosis, Thomas Cowan, MD, argues for a direct causal relationship to a corresponding increase in the number of vaccines American children typically receive--approximately 70 vaccine doses by age eighteen. The goal of these vaccines is precisely what we're now seeing in such abundance among our chronically ill children: the provocation of immune response.Dr. Cowan looks at emerging evidence that certain childhood illnesses are actually protective of disease later in life; examines the role of fever, the gut, and cellular fluid in immune health; argues that vaccination is an ineffective (and harmful) attempt to shortcut a complex immune response; and asserts that the medical establishment has engaged in an authoritarian argument that robs parents of informed consent. His ultimate question, from the point of view of a doctor who has decades of experience treating countless children is: What are we really doing to children when we vaccinate them?