Building these simple yet sophisticated machines introduces fundamentals of math and physics using levers, force, torsion, tension, and traction. Instructions and diagrams illustrate how to build seven authentic working model catapults, including an early Greek ballista, a Roman onager, and the apex of catapult technology, the English trebuchet. Additional projects include learning how to lash and make rope and how to construct and use a hand sling and a staff sling. The colorful history of siege warfare is explored through the stories of Alexander the Great and his battle of Tyre; Saladin, Richard the Lionheart, and the Third Crusade; pirate-turned-soldier John Crabbe and his ship-mounted catapults; and Edward I of England and his battle against the Scots at Stirling Castle.

    Rather than joining the Little League team, many grew up playing computer games, Dungeons and Dragons, and watching Star Wars. Now with kids of their own, these digital-age dads are looking for fresh ways to share their love of science and technology, and help their kids develop a passion for learning and discovery.Enter supergeek, and father of two, Ken Denmead. An engineer and editor of the incredibly popular GeekDad blog on wired.com, Ken has created the ultimate, idea-packed guide guaranteed to help dads and kids alike enjoy the magic of playtime together and tap into the infinite possibility of their imagination. With illustrations throughout, this book offers projects for all ages to suit any timeframe or budget. With Denmead's expert guidance, you and your child can:-Fly a night-time kite ablaze with lights or launch a video camera with balloons-Construct the Best Slip n' Slide Ever, a guaranteed thrill ride-Build a working lamp with LEGO bricks and CDs-Create a customized comic strip or your own board game-Transform any room into a spaceship-Make geeky crafts like cyborg jack-o'-lanterns or Ethernet cuff linksBrimming with endlessly fun and futuristic tidbits on everything from gaming to gadgets, GeekDad helps every tech-savvy father unleash his inner kid-and bond with the next generation of brainiacs.Watch a Video

    Are cooked mussels safe ONLY if they are open?Why does alcohol make the opposite sex more attractive?Why does washing your hands ease your conscience, make it easier to live with hard decisions, and make you more tolerant?Why does lightning strike the same place twice (and more)?Do babies get more illnesses when they are "teething"?What is the science behind people spontaneously bursting into flame?And what's more hygienic - an air blower or a paper towel?

    Along the way though I developed my own style. I boiled down what I learned and moved it indoors. I've developed designs that can be used right in the comfort of you own kitchen or out back in the woods! The truth is that Moonshining, aka "Home Distilling" is a folk art that helped build this country. Together we can make it live again, and have a little fun in the process! "But isn't this dangerous" you ask. Cooking up spirits isn't any harder then properly roasting a Thanksgiving turkey. In fact it's so easy that a redneck like me can do it. And folks if I can do it, then imagine what you might be able to create! Imagine the holidays when you pull out your own special label. Think of the drinks and dishes you can concoct. Open up a whole new world of creativity and step into the hobby that is truly one of the founding traditions of our country. There are dozens of reasons why people look into home distilling. Maybe you are looking for a new culinary branch to explore, maybe you just like the idea of knowing how to do things for yourself, perhaps you just like to keep the old ways alive or maybe you are just tired of our government telling us what we can and can not do! In this book I will show you how easy and safe this hobby really is. This book is designed for the beginner distiller and I take the time to introduce you to all the concepts of distilling that you need to get started. One of the great thing about distilling is that you can keep it simple or as get as complicated as you could possible want. This journey is all about where you want to take it. Please be advised that this is for informational purposes only. After you read this you will understand just how easy it is to make your own Moonshine, Whiskey, Vodka, Rum or even alternative fuels. Then once you understand how easy this is, how safe and how stupid the laws that restrict this are, then you can contact your congressman and/or senator and tell them to repeal the laws that are only in place to protect big businesses. Believe it or not there are Moonshiners everywhere, we have a grand tradition that goes back to the first settlers. Many historians will even tell you that it was moonshine that built this country! It's time to take back our heritage. Thank you for your support! Jeff King Moonshiners Unite!

    You go to save the presentation that's taken you all week to complete—only to discover it's corrupt. Your bank slaps you with a $25 charge for overdrafting 25 cents… And all you can think is…WTF?Luckily for you, this book fills in the blanks and gives you humorous ideas for what to do when life makes them say, "what the f*#!?" Step by step, the authors take readers through inventively therapeutic, sometimes illegal, always hilarious solutions to life's many problematic situations.Whether it happens at the office or at home, out on the town or in the bedroom, life's most f*#!'ed-up situations are covered in this entertaining guide. Rather than turn lemons into lemonade, this book spits lemon juice into life's eye and gives it a good kick to the junk.

    Choosing fabrics, cleaning china, keeping the piano in tune, making a good fire, folding a fitted sheet, setting the dining room table, keeping surfaces free of food pathogens, watering plants, removing stains -- Home Comforts addresses the meanings as well as the methods of hands -- on housekeeping to help you manage everyday chores, find creative solutions to modern domestic dilemmas, and enhance the experience of life at home.Further topics include: Making up a bed with hospital corners, Expert recommendations for safe food storage, Reading care labels (and sometimes carefully disregarding them), Keeping your home free of dust mites and other allergens, Home safety and security, A summary of laws applicable to the home, including privacy, accident liability, contracts, and domestic employees and more in this practical, good-humored, historic, philosophical, even romantic, guidebook to the art of household management.--back cover

    Volcanoes. Sharks. Quicksand. Terrorists. The pilot of the plane blacks out and it's up to you to land the jet. What do you do? The Worst-Case Scenario Survival Handbook is here to help: jam-packed with how-to, hands-on, step-by-step, illustrated instructions on everything you need to know FAST-from defusing a bomb to delivering a baby in the back of a cab. Providing frightening and funny real information in the best-selling tradition of the Paranoid's Pocket Guide and Hypochondriac's Handbook, this indispensable, indestructible pocket-sized guide is the definitive handbook for those times when life takes a sudden turn for the worse. The essential companion for a perilous age. Because you never know...

    And it's not as hard as we may think! This hand written and drawn book of charming tutorials is both fun and accessible. It's full of simple skills that anyone can and should learn. From creating tinctures and salves to concocting all-natural cleaners and body products to gardening basics, this book is great for anyone looking to live more simply, create a comfortable nest, and truly do it yourself.

    And it's all brought to you by the DIY masters at Popular Science magazine.Four comprehensive chapters help you create megafun games and toys for the amusement of all: GEEK TOYS Be the life of any party with rad gaming hacks, amazing pyrotechnics, quirky DIY robots, "wow"-inducing projectiles, and lots of ways to make beer even better. HOME IMPROVEMENTS Pimp out your pad with a laser-security system, an improvised sous-vide cooker, and a life-size cardboard display of anyone you want. GADGET UPGRADES Want to stash a flash drive in an old cassette? Use a DIY stylus on a touchscreen? Improvise a fisheye lens for your camera? With this book, you can. THINGS THAT GO Give your motorbike a Tron vibe, deck out your car with an action-figure hood ornament, and keep gadgets charged on the go with a solar-powered backpack.

    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

    You'll learn the traditional methods of brain tanning as well as how to use a dozen eggs or soap and oil instead. This revised and updated edition includes substantial improvements to the process that make it even easier for you to produce soft and durable buckskin. What's New A new 15 minute step that creates: • Easier to soften hides • Hides that come out super soft • Hides that take the dressing even when dry, which in turn: • Removes the variability of trying to get the perfect moisture content before dressing • Makes it much easier to get complete brain penetration on thick hides, which makes tanning thicker hides such as moose, elk or even thick deer, way less work. • Makes it so you can skip one of the wringing steps (which takes 15 minutes itself). Other key new highlights include: • Different skinning cuts for a better hide shape. • How to tan Moose, Elk & Antelope • Bibliography (thorough and user-friendly) • Important improvements to the Bucking process. • Important improvements to the Dressing step to ensure success for first timers. • A step-by-step guide to varying this books' Basic Method if you want to try the `pre-smoking' method, or if you want to tan without the bucking step. Buckskin is durable, soft, washable and warm. A hand-made garment for people all over the word for millennia, it breathes and stretches with your body, cuts the wind and won't tear on briars. It is excellent to wear hiking, hunting or around the house. Plus you don't need to hunt. Deer skins that would otherwise go to waste are available every fall from neighbors, locals and butcher shops.

    No question from his readers is too small or obscure for Feldman to tackle. From the return of red M&Ms (they are back, if you've missed it) to new-car smell, the answers to life's little mysteries are dissected in these pages.Although it's all done in great fun, there is also an educational edge to the answers, as Feldman ferrets out top experts in diverse fields to come up with his entertaining answers. And their answers may surprise you—from the detailed physics involved in why cans of Diet Coke float but regular Coke doesn't, all the way to why they put crinkly paper into pairs of men's socks (but only one sock, not both).Complete with drawings by longtime Imponderables® illustrator Kassie Schwan, and a special section updating answers to questions in previous books in the series, this eleventh book of Imponderables® is sure to entertain the thousands of Feldman fans who have purchased over 2 million copies to date. Prepare to be delighted!

    Now, with How to Cook Everything: Vegetarian, Bittman has written the definitive guide to meatless meals-a book that will appeal to everyone who wants to cook simple but delicious meatless dishes, from health-conscious omnivores to passionate vegetarians.How to Cook Everything: Vegetarian includes more than 2,000 recipes and variations-far more than any other vegetarian cookbook. As always, Bittman's recipes are refreshingly straightforward, resolutely unfussy, and unfailingly delicious-producing dishes that home cooks can prepare with ease and serve with confidence. The book covers the whole spectrum of meatless cooking-including salads, soups, eggs and dairy, vegetables and fruit, pasta, grains, legumes, tofu and other meat substitutes, breads, condiments, desserts, and beverages. Special icons identify recipes that can be made in 30 minutes or less and in advance, as well as those that are vegan. Illustrated throughout with handsome line illustrations and brimming with Bittman's lucid, opinionated advice on everything from selecting vegetables to preparing pad Thai, How to Cook Everything: Vegetarian truly makes meatless cooking more accessible than ever.Praise for How to Cook Everything Vegetarian"Mark Bittman's category lock on definitive, massive food tomes continues with this well-thought-out ode to the garden and beyond. Combining deep research, tasty information, and delicious easy-to-cook recipes is Mark's forte and everything I want to cook is in here, from chickpea fries to cheese soufflés."—Mario Batali, chef, author, and entrepreneur"How do you make an avid meat eater (like me) fall in love with vegetarian cooking? Make Mark Bittman's How to Cook Everything Vegetarian part of your culinary library."—Bobby Flay, chef/owner of Mesa Grill and Bar Americain and author of the Mesa Grill Cookbook"Recipes that taste this good aren't supposed to be so healthy. Mark Bittman makes being a vegetarian fun."—Dr. Mehmet Oz, Professor of Surgery, New York-Presbyterian/Columbia Medical Center and coauthor of You: The Owner's Manual

    About The Author: Henry Gray, F.R.S., Fellow of the royal college of Surgeons: Lecturer on anatomy at St. George?s Hospital Medical School. Table Of Contents: Descriptive and Surgical Anatomy The Articulations Muscles and Fasclae The Blood-vascular system The Lymphatics The Nervous system The Organs of special sense The Organs of Digestion The Organs of voice and respiration The urinary organs The Male Organs of Generation The Female Organs of Generation The Surgical Anatomy of Hernia Surgical Anatomy of the Perinaeum General Anatomy or Histology Embryology

    No one who has lips will be able to read it without smiling; it s guaranteed. The fact is, we all have our bad days -- they are an intrinsic part of being human. As prescribed by The Blue Day Book in its delightful photo and text messages, the solution is to see each incident in perspective, recognize that our feelings of failure and loss are not unique, and acknowledge the absurdities of our existence, and glory in the potential we all have. In less than one hundred sentences, The Blue Day Book conveys this message with great compassion and humor. Its vehicle is charming black-and-white photographs of animals that are strangely human and completely free of judgment or pretension. The humble marriage of easy text and beautiful images takes us through the entire evolution of a blue day -- examines what it feels like, what causes it, and how to get over it.