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? 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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. 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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 Stuff Works: How the ultimate sunglasses work By Marshall Brain http://www.JewishWorldReview.com | (MCT) It is that time of year in the United States -- the peak of summer. The sun is at its strongest, and when you go outside on a bright day the urge to squint is instantaneous. With so many photons raining down from the sun, people definitely like to be wearing sunglasses. But it brings up a question: which sunglasses should you wear? Is a $5 pair bought at a discount store just as good as a $150 pair bought at a specialty retailer? It turns out that the expensive pair of glasses really does have some advantages, which we can explore by looking at the ultimate pair of sunglasses. You can then decide whether these advantages are worth $150 to you or not. Any pair of sunglasses starts with the lenses. And there are real differences in lens quality. Fortunately, you can actually see the difference by looking through the lenses. A high end pair of sunglasses will use optical quality glass or plastic for the lenses. A $5 pair might use any old piece of plastic. The way to tell if the cheap glasses are going to cause a problem is to look through the lenses at straight lines (e.g. on the ceiling). Then move your head. If you see the lines distorting, waving or curving as move, you know that the lenses are bad. The next thing to look for in a pair of sunglasses is the color and density of the tinting. This is the reason why you buy sunglasses, and it is especially important in certain environments because the tinting can prevent eye damage. You may have heard of snow blindness. So much light reflects off the snow into your eyes that it actually causes damage to the retina. The same can happen on white sand beaches and near water. At a good sunglass retailer, you can see different levels of tinting from 70 percent to 97 percent. Also important is UV protection. You need to look for glasses that block 100 percent of both UVA and UVB light. Without UV protection, your eyes will be damaged by UV light. Polarization is another technique for blocking light, and it is especially effective on glare. Glare occurs when there are very bright reflections in the scene. The reflections can be bouncing off of water, lass, polished surfaces (e.g. cars) etc. Polarized lenses can eliminate a great deal of glare by selectively filtering it out. Another thing to look for in the ultimate pair of sunglasses is scratch resistance. Plastic lenses are especially susceptible to scratching. But a film of diamond-like carbon on the lenses can almost completely eliminate scratches so your glasses will last for many years. And then there are anti-reflective coatings, similar to those used on high quality camera lenses. When used on the inside of the lenses, anti-reflective coatings eliminate back-reflections in very bright environments. Now you can see what the lenses look like in the ultimate pair of sunglasses. They have optical-quality materials that create no distortion, the right tinting density, UV protection, polarization, scratch-resistance and an anti-reflective coating. Do you need mirrored glasses? This is strictly a matter of taste, because there is no inherent advantage to mirrored lenses. The mirror coating is simply another tinting technique. One problem with many mirrored lenses is that they scratch easily. Now that you have the perfect lenses, you need great frames. Most importantly, frames need to be the right size for your face. If they are too large or too small, they will slip off more easily. Spring-loaded temples can give your glasses a tighter fit and may also help protect them against damage. If you are spending a lot of money for glasses, you might look for some kind of frame warrantee or damage guarantee. The frame will also control the size and shape of the lenses. For example, wrap-around frames can provide more protection for your peripheral vision. Try on many different styles and see what you like best. Do you need every one of these features? No. But at the very least you should make sure that your next pair of sunglasses has good optical quality, complete UV protection and the right tinting density for your environment. 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: Any rocket is easily converted to a missile How to have a great staycation How a black box works How a solar roof works How nuclear bombs work How the Hubble Space Telescope works How hay fever works How to know when to rent vs. buy How swine flu works How a kidney dialysis machine works How children die in hot cars How a trillion dollars works How electronic cigarettes work How chimpanzees work How in vitro fertilization works How supertankers work How poisons work How corn works How dog ID chips work How President Obama's limousine works How emergency power works How aircraft carriers work How antibiotics and vaccines work How mucus works How iron and steel work How aspirin works How igloos work How the Predator UAV works How retention ponds work How water absorbers work How melamine works How digital music works How coal mining works How an economic depression works How the liver works How 3D movies work How oil pipelines work How jet packs work How seismographs work How Olympic technology works How Personal Rapid Transit works How 3G works How the Global Position System (GPS) works How octane works How cruise missiles work How submarines work How miles work How octane works How food preservation works How beer works How holding your breath works How smoke detectors work How heat pumps work How your night vision works How concentrating solar collectors work How your key fob works How the common cold works How the Large Hadron Collider Works How making a TV show works How dry cleaning works How exoskeletons work How an oil refinery works How landfills work How the Orion spacecraft works The cutting edge in HDTV Redefining the CD How the HDMI cable scam works How glow-in-the-dark toys work How the subprime mortgage crisis works How gift cards work How Tasers work How giant TV screens work How foreclosure works How Air Force One works How wildfire fighting works How vitamins work How ejection seats work How reattaching limbs works How hot air balloons work 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.

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