Users hold the crypto keys to their own money and transact directly with each other, with the help of a P2P network to check for double-spending.https://bitcoin.org/bitcoin.pdf

    This urgent report is required reading, from defense expert P.W. Singer and Council on Foreign Relations fellow Emerson Brooking.

    “I smoked in my twenties. I preferred red wine to sparkling water. I ate too much milk chocolate. I liked limericks. I know all the wrong I’ve done. But also, more than any of that, I’ve always longed for children.” Yet there she was: successful, social, mostly happy, and not a mother. Knowing that her chances of becoming pregnant naturally were quickly fading, Finn decided to gamble: she—like some 85,000 other women in the U.S. each year—would attempt in vitro fertilization. Almost three years later, she’s still trying, and in the process has become an accidental pioneer (and, at times, a guinea pig) in the ever-evolving science of IVF.“The Baby Chase” is a primer for anyone contemplating or undergoing IVF. More than that, it’s a story of longing, hope—and hormones—that will appeal to all parents, present and future.Finn’s engaging and honest account sheds light on a subject that few people who undergo IFV are willing to talk about: what happens when the science doesn’t work. “Usually, it’s only the people who come out on the other side, beaming, with a baby on one hip, who speak up about IVF,” she writes. “We never hear from those IVF has failed - it’s too crushing to talk about. We don’t hear from men and women in the middle of treatment, either.... People like me.”

    Whether you're new to camping or a seasoned pro, hit the road with Stephanie and Jeremy, hosts of the popular The RV Atlas podcast, as they show you the different ways that camping can lead to a happier, healthier family. From hiking with infants to navigating RV camping in state parks and camping in national parks—these outdoor lovers have tried it all, and See You at the Campground is a beautifully illustrated camping book for adults packed with personal anecdotes, packing lists, site recommendations, and recipes that will help you create a one-of-a-kind vacation on a family-friendly budget.Tips include: Reasons camping vacations are better Buying an RV Trip planning tips Road trip tips Campground etiquette Camping with family and friends National park adventuresThe perfect resource for parents—and a great gift for campers at any level—this is the ultimate family vacation book to bring the family closer every time you set up camp—whether it's in a cabin, tent, or RV.

    With this concise book, you will quickly gain working knowledge of Sinatra and its minimalist approach to building both standalone and modular web applications. Sinatra serves as a lightweight wrapper around Rack middleware, with syntax that maps closely to functions exposed by HTTP verbs, which makes it ideal for web services and APIs. If you have experience building applications with Ruby, you’ll quickly learn language fundamentals and see under-the-hood techniques, with the help of several practical examples. Then you’ll get hands-on experience with Sinatra by building your own blog engine. Learn Sinatra’s core concepts, and get started by building a simple application Create views, manage sessions, and work with Sinatra route definitions Become familiar with the language’s internals, and take a closer look at Rack Use different subclass methods for building flexible and robust architectures Put Sinatra to work: build a blog that takes advantage of service hooks provided by the GitHub API

    Step-by-step illustrations, helpful diagrams, and exceptional photography make this book an easy-to-follow and easy-on-the-eyes guide to getting your project done.With an emphasis on making DIY projects that can change the world, The Big Book of Maker Skills includes sections and tutorials on:Setting Up a HackerspacePicking the Right ToolsWelding SmartsCircuitry BasicsProgramming & ArduinosWorking with Wood3-D PrintingLaser-cuttingCNC RoutingTesting & PrototypingDrones and Space Exploration ToolsRoboticsBiotechnologySourcing and Crowdsourcing

    Pithy, in-depth essays and photographs examine each object’s significance to video game play—what it has contributed to the history of gaming—as well as the greater culture.A History of Video Games in 64 Objects explains how the video game has transformed over time. Inside, you’ll find a wide range of intriguing topics, including:The first edition of Dungeons & Dragons—the ancestor of computer role-playing gamesThe Oregon Trail and the development of educational gamingThe Atari 2600 and the beginning of the console revolutionA World of Warcraft server blade and massively multiplayer online gamesMinecraft—the backlash against the studio systemThe rise of women in gaming represented by pioneering American video game designers Carol Shaw and Roberta Williams’ game development materialsThe prototype Skylanders Portal of Power that spawned the Toys-to-Life video game phenomenon and shook up the marketplaceAnd so much more!A visual panorama of unforgettable anecdotes and factoids, A History of Video Games in 64 Objects is a treasure trove for gamers and pop culture fans. Let the gaming begin!

    He analyzes the evolving technologies and management strategies necessary to keep the product moving to fulfill consumers’ demand for “arriving today” gratification. Mims reveals a world where the only thing moving faster than goods in an Amazon warehouse is the rate at which an entire industry is being gutted and rebuilt by innovation and mass shifts in human labor practices. He goes behind the scenes to uncover the paradoxes in this shift—into the world’s busiest port, the cabin of an 18-wheeler, and Amazon’s automated warehouses—to explore how the promise of “arriving today” is fulfilled through a balletic dance between humans and machines. The scope of such large-scale innovation and expended energy is equal parts inspiring, enlightening, and horrifying. As he offers a glimpse of our future, Mims asks us to consider the system’s vulnerability and its resilience, and who shoulders the burden, as we hurtle toward a fully automated system—and what it will mean when we are there.

    Above all it fizzes with a dizzying mix of deliciously vital ideas. . . A staggering achievement' Tim HarfordThe smartphones in our pockets and computers like brains. The vagaries of game theory and evolutionary biology. Self-replicating moon bases and nuclear weapons. All bear the fingerprints of one remarkable man: John von Neumann.Born in Budapest at the turn of the century, von Neumann is one of the most influential scientists to have ever lived. His colleagues believed he had the fastest brain on the planet - bar none. He was instrumental in the Manhattan Project and helped formulate the bedrock of Cold War geopolitics and modern economic theory. He created the first ever programmable digital computer. He prophesied the potential of nanotechnology and, from his deathbed, expounded on the limits of brains and computers - and how they might be overcome.Taking us on an astonishing journey, Ananyo Bhattacharya explores how a combination of genius and unique historical circumstance allowed a single man to sweep through so many different fields of science, sparking revolutions wherever he went.Insightful and illuminating, The Man from the Future is a thrilling intellectual biography of the visionary thinker who shaped our century.

    In Dishing Up the Dirt, Andrea offers 100 authentic farm-to-table recipes, arranged by season, including:Spring: Honey Roasted Strawberry Muffins, Lamb Lettuce Wraps with Mint Yogurt Sauce, Spring Harvest Pizza with Mint & Pea Pesto, Kohlrabi and Chickpea SaladSummer: Blueberry Lemon Ricotta Biscuits, Roasted Ratatouille Toast, Kohlrabi Fritters with Garlic Herb Cashew Cream Sauce, Farmers Market Burgers with Mustard Greens Pesto Fall: Farm Girl Veggie Bowls, Butternut Molasses Muffins, Early Autumn Moroccan Stew, Collard Green Slaw with Bacon Gremolata Winter: Rutabaga Home Fries with Smokey Cashew Sauce, Hoisin Glazed Brussels Sprouts, Country Girl Old Fashioned Cocktails, Tumbleweed Farm Winter Panzanella  Andrea’s recipes focus on using whole, locally-sourced foods—incorporating the philosophy of eating as close to the land as possible. While many recipes are naturally gluten-free, dairy-free, or vegetarian, many others include elemental ingredients like bread, cheese, eggs, meat, and sweeteners, which are incorporated in new and inventive ways.In short essays throughout the book, Andrea also presents an honest glimpse of life on Tumbleweed Farm—the real life of a farmer, not the shabby-chic fantasy often portrayed—offering fascinating and frequently entertaining details about where the food on our dinner tables comes from. With stunning food photography as well as intimate portraits of farm life, Dishing Up the Dirt allows anyone to be a seasonal foodie and an armchair farmer.

    Follow Marty McFly through the Hill Valley of 1985, 1955, and 1985 once again as he races Back to the Future. Trail Jack Torrance as he navigates the corridors of the Overlook Hotel in The Shining. And join Indiana Jones on a globe-spanning journey from Nepal to Cairo to London on his quest for the famed Lost Ark. Each map is presented in an 11-by-14-inch format, with key details enlarged for closer inspection, and is accompanied by illuminating essays by film critic A. D. Jameson, who speaks to the unique geographies of each film. This beautifully designed atlas is an essential reference for anyone who loves great art and great films.

    Nationally recognized expert Laura Fleming provides all the answers in this breakthrough guide. From inception through implementation, you’ll find invaluable guidance for creating a vibrant Makerspace on any budget. Practical strategies and anecdotal examples help you: Create an action plan for your own personalized Makerspace Align activities to standards Showcase student creations Use this must-have guide to painlessly build a robust, unique learning environment that puts learning back in the hands of your students!

    At that career level, you’ll no longer be required to work towards the next promotion, and being promoted beyond it is exceptional rather than expected. At that point your career path will branch, and you have to decide between remaining at your current level, continuing down the path of technical excellence to become a Staff Engineer, or switching into engineering management. Of course, the specific titles vary by company, and you can replace “Senior Engineer” and “Staff Engineer” with whatever titles your company prefers. Over the past few years we’ve seen a flurry of books unlocking the engineering management career path, like Camille Fournier’s The Manager’s Path, Julie Zhuo’s The Making of a Manager, Lara Hogan’s Resilient Management and my own, An Elegant Puzzle. The management career isn’t an easy one, but increasingly there are maps available for navigating it. On the other hand, the transition into Staff Engineer, and its further evolutions like Principal and Distinguished Engineer, remains challenging and undocumented. What are the skills you need to develop to reach Staff Engineer? Are technical abilities alone sufficient to reach and succeed in that role? How do most folks reach this role? What is your manager’s role in helping you along the way? Will you enjoy being a Staff Engineer or you will toil for years to achieve a role that doesn’t suit you? "Staff Engineer: Leadership beyond the management track" is a pragmatic look at attaining and operating in these Staff-plus roles.

    Embedding himself within police departments on both coasts, Fasman explores the moral, legal, and political questions posed by these techniques and tools.By zeroing in on how facial recognition, automatic license-plate readers, drones, predictive algorithms, and encryption affect us personally, Fasman vividly illustrates what is at stake and explains how to think through issues of privacy rights, civil liberties, and public safety. How do these technologies impact how police operate in our society? How should archaic privacy laws written for an obsolete era—that of the landline and postbox—be updated?Fasman looks closely at what can happen when surveillance technologies are combined and put in the hands of governments with scant regard for citizens’ civil liberties, pushing us to ask: Is our democratic culture strong enough to stop us from turning into China, with its architecture of control?

    When author Nancy Lande started homeschooling more than 10 years ago, this is the book she wanted that didn't exist. What better way to create your homeschool than reading about others and picking and choosing the styles that appeal to you? Lande has corralled a variety of homeschoolers and, with some deft editing, allowed them to speak for themselves. Every chapter features a different household on any given day. Many of the writers are mothers, but a stay-at-home dad and several children tell their tales as well. Their detailed descriptions start in the waking hours of morning and get down to the nitty-gritty information of everyday life in a homeschool: how moms fit in showers, how chores are divvied up, how reading and research are gently initiated, how parents set aside time for themselves. These writers invite the reader into their homes and advise, "Don't mind the mess." Their passages are often funny and unflinchingly honest. They aren't embarrassed to tell you they whipped out SpaghettiOs for a hurried lunch or stole a peek at CNN while ignoring the chaos in the playroom. Some of the families have created highly structured school environments within their homes, with desks and sharpened pencils. Others promote freestyle learning, with their children sprawled across the house working on projects or reading in between walking the dog, playing games, and riding bikes. The majority of families here live in Pennsylvania, the author's home state, but one writes from as far away as Scotland, another lives on a mountain in Alaska, and yet another checks in from a college town in Texas. Their learning logs, reading lists, and journal entries, along with family photos, help illustrate the book. The quilt they piece together is a great service to those wondering how to approach homeschooling. --Jodi Mailander Farrell