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Why Do Coins Make Your Hands Smell Funny?

A lot of people assume that it's just the way that coins smell, and the odor is rubbing off on their hands, but you're not smelling the metal so much as you're smelling yourself. That funky scent is actually a human body odor created by the reaction of oils in the skin contact with objects that contain iron (a separate, but similar odor, is created when we touch copper). What we think of as a "metallic smell" is only metallic by association.

Here's how it works.

When you touch something made of iron, perspiration on your skin cause the iron atoms to gain two electrons, and these doubly negative iron atoms react with oils in the skin, forming several types of compounds called aldehydes and ketones. If you've gotten a whiff of formaldehyde while dissecting frogs in science class or wrinkled your nose at the smell of acetone in nail polish remover, then you know that these compounds have very strong, distinctive odors.

When German researchers captured and studied the chemical composition of vapors coming from the skin of people who had just handled iron objects, they found one compound, 1-octen-3-one, that has a particularly pungent fungus-meets-metal smell and is detectable by humans at very low concentrations. This compound may be the main component of the odor of your hands post-money-handling.

You might have noticed that a similar smell is produced when blood meets skin. That's because blood contains iron and these iron atoms go through the same reaction you're your skin as the atoms from coins, producing the same scent molecules.

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GoPro Will Let You Trade in Your Old Digital Camera for One of Their Cool New Ones
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If your camera is aging, GoPro just gave you a great incentive to trade it in for a new model. The company has launched a buyback program that discounts its latest models if you send in your old camera, according to TechCrunch.

If you participate in the GoPro TradeUp program, the company will lop $50 off the price of the new GoPro HERO6 Black and $100 off the price of the Fusion, both released in late 2017. The offer applies to any digital camera—GoPro or not. Now might be a good time to offload that digital point-and-shoot you’ve been sitting on. (It does have to have an original retail value of at least $100.)

GoPro tried a similar initiative in 2017, giving customers 60 days to send in older GoPro models and get a discount on new models. Almost 12,000 customers answered the call. Now, the company is bringing it back with no end date, and the program will now accept any digital camera, whether GoPro-made it or not. “Dented, dinged, destroyed—no problem, we’ll take it,” the site promises.

If you’re already looking to get a new camera and want to dispose of your old one properly, this is a good way to do it. According to the company, “returned cameras will be recycled responsibly via zero landfill and recycling methods appropriate to material type.”

When you order one of the two available GoPro models through the TradeUp program, the company will direct you to dust off your old camera and send it in, with shipping costs covered. Once GoPro receives your old camera, it will send you the discounted new one.

With the discounts, a HERO6 Black would cost $350, and the 360°-shooting Fusion would cost $600.

[h/t TechCrunch]

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Afternoon Map
The Richest Person of All Time From Each State


Looking for inspiration in your quest to become a billionaire? This map from cost information website HowMuch.net, spotted by Digg, highlights the richest person in history who hails from each of the 50 states.

More billionaires live in the U.S. than in any other country, but not every state has produced a member of the Three Comma Club (seven states can only lay claim to millionaires). The map spans U.S. history, with numbers adjusted for inflation. One key finding: The group is overwhelmingly male, with only three women represented.

The richest American by far was John D. Rockefeller, repping New York with $257.25 billion to his name. Amazon's Jeff Bezos and Microsoft's Bill Gates clock in at the third and fifth richest, respectively. While today they both make their homes in the exclusive waterfront city of Medina, Washington, this map is all about birthplace. Since Gates, who is worth $90.54 billion, was born in Seattle, he wins top billing in the Evergreen State, while Albuquerque-born Bezos's $116.57 billion fortune puts New Mexico on the map.

The richest woman is South Carolina's Anita Zucker ($3.83 billion), the CEO of InterTech Group, a private, family-owned chemicals manufacturer based in Charleston. Clocking in at number 50 is the late, great socialite Brooke Astor—who, though a legend of the New York City social scene, was a native of New Hampshire—with $150 million.

[h/t Digg]

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