May 24, 2012 Jeff Jacoby: The peace process battered Israel's reputation Near-nuclear nation threatens to walk out of summit unless it gets its way Clifford D. May: What Iran's Rulers Want Michael Muskal: 'Pro-choice' position hits record low, according to poll Chris Farrell: Are We in a Tech Bubble? Kimberly Lankford: Switching Medicare Advantage Plans Mid-Year Bryan McIver, M.B., Ch.B., Ph.D.: Mayo Clinic Medical Edge: Understanding hyperthyroidism and its variety of treatment options French rights groups want Google to stop suggesting 'Jew' Two-fly rule for Beijing toilets The Kosher Gourmet by Penelope Wall: PHILLY CHEESE STEAKS --- hold the steak! May 23, 2012 Ex-CIA spy in Iran's Revolutionary Guard: Baghdad talks highlight Western naivete Putin's latest defiance shows Obama's whisper didn't work Tony Pugh: More private colleges offering tuition discounts Lisa Gerstner: 4 Money-Etiquette Questions Answered Mary Beth Franklin: How to Choose the Right Annuity for You Art Markman, Ph.D.: Get smart: How to bulk up your creativity muscles Israeli scientists use skin cells to help repair heart muscle Tina Susman: The wig wasn't enough: Man gets 13 years for posing as his dead mom The Kosher Gourmet by Emma Christensen:A simple way to do fish right May 22, 2012 David S. Cloud and Kathleen Hennessey: Obama changes mind on Pakistan invite to NATO summit --- and then gets dissed by country's president US Senate approves new sanctions against Iran ahead of Baghdad talks Warren Richey: Can US group challenge overseas surveillance act? Supreme Court to decide Supreme Court: Twins can't claim dead dad's benefits Thomas M. Anderson: Walking Away From a Mortgage Environmental Nutrition editors: The lowdown on a low-acid diet Pomegranate juice maker used deceptive ads, FTC judge rules Relatives outraged over spoof on Hamas chief's killing The Kosher Gourmet by Megan Gordon: Enjoy a celebration of the most rich and layered flavors: Black bean, sweet potato and quinoa chili May 21, 2012 Mark Clayton: Cybersecurity: How US utilities passed up chance to protect their networks Howard LaFranchi: NATO summit: Who will foot the bill for long-term Afghanistan security? Chris Farrell : Earn Dividends in Emerging Markets with This WisdomTree ETF James K. Glassman: 5 Stock Picks Among Online Retailers Stephen Whiteside, Ph.D. : Mayo Clinic Medical Edge: Social anxiety disorder --- or just shy? Guy Jackson : Victim's father regrets death of Lockerbie bomber The Kosher Gourmet by Mario Batali: Famed chef's veal shoulder farsumagru: A festive meat course for late spring May 18, 2012 Rabbi Berel Wein: Striving: The People of the Book's Book for (All of) the People Caroline B. Glick: Embracing dangerous delusions and not our friends Steven Goldberg: 5 Great Stock Picks and the Exchange-Traded Fund that Owns Them Janet Bodnar: How to Teach Kids to Handle Credit Cards Mary Pickett, M.D.: Ask the Harvard Experts: Don't be forced into gluten-free lifestyle based merely on a doctor's false-positive test The Kosher Gourmet by Carolyn Malcoun: DIY healthy lunchbox treats: HOMEMADE FRUIT BARS for kids and brown-bagging adults alike May 17, 2012 Warren Richey: Teacher fired for being unwed and pregnant can sue religious school, court rules Josh Mitnick: Netanyahu's 'centrist' coalition is already proving it's anything but Steven Goldberg: Earn Dividends in Emerging Markets with This WisdomTree ETF Mary Beth Franklin: Retirement Savings Tips for New Grads Amina Khan: Research links coffee to lower death rates Chelsea Sheasley: Social media: Is it too feminine? The Kosher Gourmet by Faith Duran : Cheesy Potato Breakfast Casserole with Cheddar and Sun-Dried Tomatoes May 16, 2012 Jackson Holahan: The Aleppo Codex Jonathan Tobin : Iran Declares Victory in Nuclear Talks Kiplinger Reports, Summarized Anne Kates Smith: 7 Stocks That Let You Sleep Tight Carmen Terzic, M.D., Ph.D. : Mayo Clinic Medical Edge: A variety of exercises can help improve balance Melissa Healy: National strategy on Alzheimer's disease aims to halt it by 2025 The Kosher Gourmet by Joyce White : GOODNESS GRACIOUS: GREENS! 4 winning recipes that are no longer just for down-home folks (Includes expert tips & techniques) May 15, 2012 Dennis Prager: God and Man at (and for) Liberty Kristen Chick: Obama administration resumes arms sales to Bahrain despite serious unresolved human rights issues. Activists feel abandoned Pat Mertz Esswein: Homes are now affordable again and mortgage rates are low. What you need to know before you buy Kathy Kristof: Our Practical Investor Fights Inflation with These 6 Investments Sue Hubbard, M.D.: The Kid's Doctor: Lactose intolerant young child? Check again Environmental Nutrition Editors: Get the facts on palm sugar sweetening The Kosher Gourmet by Kathy Hunt: Spread a Little Excitement with EXOTIC CONDIMENTS (4 RECIPES) May 14, 2012 Richard Simon: Purple Hearts for domestic terror victims? Nando Pelusi, Ph.D.: The privacy paradox: Surrounded by strangers, we risk isolation, anxiety Chris Farrell: Investing Lessons from the Great Recession Lisa Gerstner: How to Protect Your Identity, Finances If You Lose Your Phone Harvard Health Letters: Heart disease and dementia Tiffany O'Callaghan: New hormone mimics effects of exercise without the sweat The Kosher Gourmet by Megan Gordon: MANGO COCONUT OAT MORNING MUFFINS are a bright but hearty delight May 11, 2012 Rabbi B. Shafier: Why happiness will always be elusive Charles Krauthammer: Echoes of '67: Israel unites Howard LaFranchi: With G8 snub, US-Putin 'reset' off to stumbling start Jeremy J. Siegel: Investors, Relax About Rising Interest Rates Jessica L. Anderson: Get the Best Deal on a Used Car Jett Stone: Forget face-lifts and fake knees. Scientists have seen the fountain of youth --- and it's broccoli The Kosher Gourmet by Chef Mario Batali: The famed chef's vegetable dish that tastes true to the season: FAVAS AND SUGAR SNAP PEAS WITH POTATOES AND TARRAGON May 10, 2012 Clifford D. May: The Real Palestinian Refugee Problem Sergei L. Loiko: Putin sends warning to U.S., NATO in Victory Day speech at Red Square Mary Rourke: How being a 'mentch' got Vidal Sasoon his start and fighting in Israel's War of Independence provided him with confidence and a strong sense of his own identity Harvard Health Letters: Palliative care: Underused therapy yields surprising benefits Jeff Bertolucci: Get Home Phone Service for Less Than $10 a Month Rachel L. Sheedy and Susan B. Garland : Make the Right Moves to Boost Benefits The Kosher Gourmet by Betty Rosbottom: Gleaming with its golden, crimson, and snowy white hues, this silken smooth and creamy STRAWBERRY ORANGE TRIFLE looks impressive, but is easy to prepare May 9, 2012 John Rosemond: Parents, stop destroying the American male Valerie J. Nelson: Maurice Sendak, author of 'Where the Wild Things Are,' dies at 83 Bob Frick: Angst Over Annuities Sharon Palmer, R.D. How you can reduce your risk -- or delay -- chronic diseases associated with aging Howard LeWine, M.D.: Ask the Harvard Experts: Why did my blood pressure suddenly shoot up? Lisa Gerstner: Lower the Rate on All Your Loans The Kosher Gourmet by Emily Ho : Springtime soba with miso sauce offers a coloful mix of fresh textures and flavors May 8, 2012 Edmund Sanders: Netanyahu suddenly cancels new elections, forms unity government Frank J. Gaffney Jr.: Farewell to European superstate Anne Kates Smith: 4 Stocks That Mimic Buffett and Berkshire Hathaway Gaia Vince and Clare Wilson The Rise of Miniature Medical Robots: Fantasy Fast Becoming Reality Paul Takahashi, M.D.: Mayo Clinic Medical Edge: Never suffer night leg cramps Jessica L. Anderson: Extended-Warranty Warning The Kosher Gourmet by Diane Rossen Worthington: Celebrate National Chocolate Chip Day with the Best Cookie Ever (Includes techniques) May 7, 2012 Mark Clayton: Homeland Security warns major cyber attack aimed at gas pipeline industry underway Angus Roxburgh: Putin Decoded: World view of a Russian feeling dissed Kimberly Lankford: Navigate a Course for Long-Term Care Kevin McCormally How to Adjust Your Tax Withholding Celeste Robb-Nicholson, M.D.: Harvard Health Letters: How do you treat a Baker's cyst? Joanne Capano: Healthy Snacks for Children: The Choices May Surprise You The Kosher Gourmet by Penelope Wall: Classic Creamy Spinach Dip with a Fraction of the Calories and Fat May 4, 2012 Rabbi Nathan Lopes Cardozo: Holy 'trivialities' Jonathan Tobin: Bibi v. Barak will be no contest this time around Steven Goldberg: Blue Chip Stocks On Sale Worldwide Art Pine Slow Productivity Growth a Blessing --- For Now Sue Hubbard, M.D. : The Kid's Doctor: Are Kids Too Wired? Kerri-Ann Jennings, M.S., R.D: Foods that are good for your smile Amy Paturel, M.S., M.P.H.: Eating Well: Foods that are good for your smile The Kosher Gourmet by Betty Rosbottom: Strawberry rhubarb parfaits are elegant yet simple to assemble May 3, 2012 Michael Freund: Who's Afraid of the Messiah? Clifford D. May: The Foggiest War Susan B. Garland: Insurance to Cover Old Old Age Steven Goldberg 6 Reasons to Bet on a Big Bull Market Harvard Health Letters: Treating prostate cancer --- no rush to judgment Larry Gordon: Harvard, MIT partner to offer free online courses Naomi Nix : Man gets free trip to Chicago after postcard sent by mother in 1957 finally reaches him The Kosher Gourmet by Diane Rossen Worthington: Intensely Italian vegetable frittata is a seriously simple standby

Jewish World Review How hot air balloons work By Marshall Brain http://www.JewishWorldReview.com | (MCT) Between October 6th and 14th, Albuquerque, N.M., will be hosting the International Balloon Fiesta, one of the largest hot air ballooning events in the world. Hundreds of balloons will be there, taking off and landing on a daily basis. It is an incredible sight, and begs the question: How do hot air balloons work? Why do they need to be so big? And how do their pilots steer them? The basic idea behind a hot air balloon is simple enough. Hot air rises, so a balloon full of hot air can fly. The problem is that hot air doesn't lift very much. If you take a cubic foot of air and weigh it, it weighs about 28 grams. If you heat it up by a hundred degrees, it weighs 21 grams or so. Therefore, a cubic foot of hot air can lift only 7 grams. It means that if you want to lift 1,000 pounds, you need a balloon that holds 65,000 cubic feet. 65,000 cubic feet is hard to imagine, so let's put it into perspective. A typical 2,000 square foot house holds about 16,000 cubic feet of air. So a hot air balloon needs to be as big as four houses if it is going to lift 1,000 pounds. That is why hot air balloons are so huge. To hold all that hot air, a balloon needs to be made of something that is strong and light. Nylon fabric is the best thing we have right now. Nylon is also nice because it will hold its strength even when it is hot. A balloon is made of hundreds of pieces of nylon fabric sewn together into the shape of the balloon envelope. The bottom part of the balloon is called the skirt. It is made of heavier fabric, usually fire-resistant, to protect it from the heat of the burner. The burners use propane to heat the air. This is the same propane that you would use for a backyard grill, but the tanks are much larger and a hot air balloon uses liquid propane. In a backyard grill, the burner uses propane gas taken from the top of the propane tank. In a hot air balloon, the burner uses liquid propane taken from the bottom of the tank. The reason for this difference is the fact that a hot air balloon needs a LOT of heat to rise. The burner turns the liquid propane into a huge amount of propane gas, and when this gas burns it sounds like a jet engine. The flame is huge. All that heat gives the pilot a way to get the balloon to rise relatively quickly. Besides the burner, the pilot has two other options at his disposal to control the balloon. At the top of the balloon is a big fabric valve. The pilot can open the valve to quickly deflate the balloon. Or the pilot can do nothing, using neither the burner nor the valve. In that case, the balloon cools and descends slowly. Unlike just about every other form of conveyance on the planet, the pilot of a hot air balloon does not have a direct way to steer the vehicle. A hot air balloon goes where the wind blows. When you are riding in a balloon, the lack of steering makes the journey quite serene. Since the balloon is going at exactly the same speed as the wind, it is completely still in a balloon. The pilot sometimes has an indirect way to steer. It is possible for the wind to blow in different directions at different altitudes. When this happens, the pilot can raise or lower the balloon's altitude to go a different direction. Landing a balloon is one of the most interesting challenges of the trip. The pilot first needs to find a huge open area that is free of power lines, trees, angry dogs, charging bulls, gun-toting owners, etc. This open area also needs to be in line with the wind's direction. Then the pilot lets the balloon descend and settle into that area, opening the valve at the top of the balloon to deflate the envelope at just the right time. At that point the ground crew arrives and helps pack the balloon up. All of these elements - the huge size of the balloon, the lack of steering, the challenges of taking off and landing, etc. - make ballooning a sport like no other. Every weekday JewishWorldReview.com publishes what many in the media and Washington consider "must-reading". Sign up for the daily JWR update. It's free. Just click here. Comment by clicking here. Previously: How paparazzi work How counterfeiting works How CDs work How the Edsel worked How Stinger missiles work How hybrid cars work How sharks work How mosquitoes work How diesel engines work How water towers work How the Dawn mission works How Kassam rockets work How the North American Eagle works Why aren't we flying to work? How tofu and soy milk work How Colony Collapse Disorder works How airbags work How the U.S. income tax works How gum works How caffeine works How Daylight Saving Time works How a cruise missile works How snow making works © 2007, How Stuff Works Inc. Distributed by McClatchy-Tribune Information Services.

Arnold Ahlert  Mitch Albom  Jay Ambrose  Michael Barone  Barrywood  Lori Borgman  Stratfor Briefing  Mona Charen  Linda Chavez  Richard Z. Chesnoff  Ann Coulter  Greg Crosby  Alan Douglas  Larry Elder  Suzanne Fields  Frank J. Gaffney  Bernie Goldberg  Jonah Goldberg  Julia Gorin  Jonathan Gurwitz  Paul Greenberg  Argus Hamilton  Victor Davis Hanson  Betsy Hart  Ron Hart  Nat Hentoff  Marybeth Hicks  A. Barton Hinkle  David Horowitz  Jeff Jacoby  Renee James  Paul Johnson  Jack Kelly  Ed Koch  Ch. Krauthammer  Michael Ledeen  John Leo  David Limbaugh  Kathryn Lopez  Rich Lowry  Michelle Malkin  Jackie Mason  Ann McFeatters  Dale McFeatters  Dana Milbank  Jeanne Moos  Dick Morris  Jim Mullen  Deroy Murdock  Judge A. Napolitano  Bill O'Reilly  Kathleen Parker  Star Parker  Dennis Prager  Wesley Pruden  Tom Purcell  Sharon Randall  Robert Robb  Cokie & Steve Roberts  Heather Robinson  Pat Sajak  Debra J. Saunders  Martin Schram  Culture Shlock  David Shribman  Roger Simon  Michael Smerconish  Thomas Sowell  Ben Stein  Mark Steyn  John Stossel  Cal Thomas  Dan Thomasson  Bob Tyrrell  Ben Wattenberg  Diana West  Dave Weinbaum  George Will  Walter Williams  Byron York  ZeitGeist  Mort Zuckerman  Robert Arial  Chuck Asay  Baloo  Chip Bok  Dry Bones   Lisa Benson  John Branch  John Cole  J. D. Crowe  John Deering  Brian Duffy  Everything's Relative  Mallard Fillmore  Glenn Foden  Jake Fuller  Bob Gorrel  Walt Handelsman  Joe Heller  David Hitch  Jerry Holbert  David Horsey  Lee Judge  Steve Kelley  Jeff Koterba  Dick Locher  Chan Lowe  Jimmy Margulies  Jack Ohman  Michael Ramirez  Drew Sheneman  Kevin Siers  Jeff Stahler  Scott Stantis  Ed Stein  Danna Summers  John Trever  Gary Varvel  Kirk Walters   Dan Wasserman  Mr. Know-It-All  Ask Doctor K  Richard Lederer  Frugal Living  Tech Maven  On Nutrition  Bookmark These  Bruce Williams