Computers in Schools Jeopardy Fluoridated Water Iodized Salt 
Answer: Iodized Salt
When pondering what could cause entire swathes of the country to enjoy significant IQ gains, most of us would turn our attention to things that are inherently cerebral in nature: better funded grade schools, literacy programs, or college tuition initiatives, for example.
One of the most significant impacts on the IQ levels of U.S. citizens, however, was not standardization of schooling, increased college attendance, or literacy programs, but the introduction of iodine-enriched salt. Starting in 1924, all non-kosher table salt in the US was enriched with iodide, a micronutrient that is incredibly important to neurological development. Not only do children born from mothers who are iodine deficient have lowered cognitive functioning (damage, unfortunately, that cannot be undone later), iodine deficiency is also the leading preventable cause of mental retardation worldwide.
So how big of an impact did the introduction of iodized salt have on IQ levels? Areas of the country with no natural sources of iodide (e.g. inland areas where iodine-rich sea food was rarely consumed) saw an average rise of 15 points over the following decade–a rise of one full deviation on the scale in just ten years.
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Regardless of size or the materials used to build them, each bridge is an individual work of art. Add lights to them at night and they rise to a whole new level of beauty. Bring these architectural wonders of the night to your desktop with the second in our series of Bridges at Night Wallpaper
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We have all heard the same advice about choosing strong, secure passwords, never re-using passwords for multiple accounts, and more when managing our own sets of passwords. But what methods do the tech industry’s top security experts use? Ars Technica decided to find out by interviewing five well
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SuperUser reader user31073 is curious whether he should really heed those short-password warnings:
Outlook has a feature which can attempt to detect if you have forgotten to attach that very important document to your email. Whether you like it or not, here is how to both enable as well as disable it.
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The switch-over to Google Hangouts from Google Chat/Talk earlier this year left people without a beloved and much used feature…the ability to make calls from within their Google accounts. Starting this week though, the ability to make calls has been added into the Hangouts messaging system so that
If you’re tired of looking up the IP addresses of devices you frequently access via remote login, SSH, and other means on your home network, you can save yourself a lot of time by assigning an easy to remember .local address to the device. Read on as we demonstrate by assigning an easy to remember
