Peter SmithThe most important source of vitamin D is sunlight, but north of the 42 degree north latitude line, you might need supplemental vitamin D. Where does that come from? Food, especially mackerel, mushrooms, and margarine.
David McCandless put together this graphic that provides a good overview of the subject, coming as the shortest days of the year approach. Click on the image below for his sources.
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Debunking 'Green Living': Combatting Climate Change Requires Lifestyle Changes, Not Organic Products
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A Geodesic Dome Promises Fish from the Sky
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TED's Taboo: What's Too Controversial for the Hipster Confab?
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Billr: The App for Dining on a Budget (Without Annoying Your Friends)
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Companies Value Internships, So Why Don't They Hire Interns?
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Debunking 'Green Living': Combatting Climate Change Requires Lifestyle Changes, Not Organic Products
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Infographic: Understanding Social Enterprise
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Billr: The App for Dining on a Budget (Without Annoying Your Friends)
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TED's Taboo: What's Too Controversial for the Hipster Confab?
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Is it Time to 'Occupy Teach For America'?
Do Something U's latest video offers advice for getting people to vote in crowdsourced contests.
This spring, millions of people strolling at night near the National Mall in Washington, D.C. will be able to see a museum turned inside out.
The GOOD Company Project is focusing on mid-size companies, and this infographic will tell you why.
Did you know that over 80 percent of the nation's op-eds are written by men? Open any newspaper from the Wall Street Journal to The New York...
Guess how many gays have been kicked out of the armed forces since 1994, the year after Congress passed "Don't ask, Don't tell"? Just have a...
The numbers behind the 727 million pieces of mail that are handled every day.
Rewards for eating yucky vegetables really makes kids like them—and the effect sticks.
You can't control those reckless banks and free-borrowing governments, but you can get your own budget in order. Here's how.
How fictional baseball player Kenny Powers got his shoe deal.
Three steps to cleaner feeds and better privacy settings.
President Obama tells us that by 2020, we need an additional eight million more Americans to graduate from college. The pressure is now on for...
It just involves a little creativity on Halloween...
Medical professionals are always forgetting to wash up before dealing with patients. How would you remind them?
A whole new meaning for the term "precious metal."
Make sure that when you need a loan, you'll get one—and cheap.
If Sarah Palin's angry about $4-a-gallon gas, she should be really angry at her $32-a-gallon latte.
We all do it. Our favorite magazine arrives, we dutifully place it on the coffee table in anticipation, looking forward to spending a...
Pledge your support in the next 30 days, and we'll reward you with a limited edition poster print of your very own.
The Rocky Mountain Institute's new book shows how existing technologies and ideas could get America off fossil fuels by 2050.
Weddings have become such a mega-monster event in the United States, it seems appropriate to offer some kind of shadow event.
