Why Do Some People (Especially Red Heads) Have Freckles?

iStock.com/NinaMalyna
iStock.com/NinaMalyna

For some people, freckles are a cosmetic obstacle. For others, they're a hot fashion accessory. But what causes the skin sprinkles that some people call "angel's kisses"? Basically, it's all in your genes—and the sun.

Freckles are concentrated flecks of melanin, a pigment protein. Melanin shows up when ultraviolet radiation (UV) hits the skin. UV is damaging, and melanin protects the skin from that damage by darkening it—think of it like your skin slipping on a pair of shades.

Melanin is produced in a type of cell called melanocytes. In some people, melanocytes are spread out evenly, and sun exposure produces a smooth wash of melanin, also known as a tan. In others, melanocytes are bunched up, and the sun produces crazy constellations of melanin, a.k.a. freckles. 

So why do redheads tend to have more freckles? Because both red hair and freckles are usually caused by the same gene, MC1R. The gene perches on melanocytes and controls the pigment balance in both hair and skin. When MC1R is working the way it normally does, it converts any pigment the body produces into eumelanin, which is responsible for black and brown hair and skin colors. When the MC1R gene is “broken,” it allows a rarer type of human pigment, pheomelanin, to build up in the body. Pheomelanin causes reddish hair and the rusty look of most freckles. Variations of the MC1R may also control the number of freckles people have.

But MC1R isn’t the only gene causing freckles. About a decade ago, scientists discovered another gene responsible for freckles in Chinese populations. Other genes may be involved too—scientists have yet to unravel all of the genetic causes behind freckles, which occur in a variety of ethnic groups. Regardless of the precise genetic mechanism, freckles are always a family affair: Parents pass on the likelihood of freckling, as well as its locations across the body.

While some pigmented skin disorders can also cause freckling, freckles by themselves are not a cause for concern (unlike moles, which are raised bumps on the skin—freckles are flat). But if you have freckles, make sure to wear plenty of sunscreen, since the areas where the freckles aren’t located will be especially susceptible to sunburn. You can think of them as spelling out your own little reminder system.

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

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Why Does the Supreme Court Have Nine Justices?

Front row, left to right: Stephen G. Breyer, Clarence Thomas, (Chief Justice) John G. Roberts, Jr., Ruth Bader Ginsburg, Samuel A. Alito. Back row: Neil M. Gorsuch, Sonia Sotomayor, Elena Kagan, Brett M. Kavanaugh.
Front row, left to right: Stephen G. Breyer, Clarence Thomas, (Chief Justice) John G. Roberts, Jr., Ruth Bader Ginsburg, Samuel A. Alito. Back row: Neil M. Gorsuch, Sonia Sotomayor, Elena Kagan, Brett M. Kavanaugh.
Fred Schilling, Collection of the Supreme Court of the United States // Public Domain

Some facets of the U.S. government—like presidential terms and post offices—were written into the original Constitution after (often lengthy) deliberations by the Founding Fathers. The number of Supreme Court justices was not one of those things.

The document did establish a Supreme Court, and it stated that the president should appoint its judges; it also mentioned that a “Chief Justice shall preside” if the president gets impeached. Since it was left up to Congress to work out the rest of the details, they passed the Judiciary Act of 1789, which outlined an entire court system and declared that the Supreme Court should comprise one chief justice and five associate justices. As History.com explains, they landed on six because the justices would have to preside over federal circuit courts, one of which was located in each state. Traveling wasn’t quick or easy in the horse-and-carriage days, so Congress wanted to minimize each justice’s jurisdiction. They split the courts into three regions, and assigned two justices to each region.

According to Maeva Marcus, director of the Institute for Constitutional History at George Washington University Law School, the even number of justices was a non-issue. “They never even thought about it, because all the judges were Federalists and they didn’t foresee great disagreement,” she told History.com. “Plus, you didn’t always have all six justices appearing at the Supreme Court for health and travel reasons.”

Over the next 80 years, the number of Supreme Court justices would fluctuate for two reasons: the addition of federal circuit courts, and presidents’ partisan motives. John Adams and his Federalist Congress reduced the number to five with the Judiciary Act of 1801, which they hoped would prevent Democratic-Republican Thomas Jefferson from getting to fill a seat after he took office that year. By the following year, Jefferson’s Congress had passed another judicial act that returned the number of justices to six, and they upped it to seven after forming another circuit court in 1807.

The nation grew significantly during the early 19th century, and Congress finally added two new circuit courts—and with them, two new Supreme Court seats—during Andrew Jackson’s presidential tenure in 1837. Republican Abraham Lincoln then briefly increased the number of justices to 10 in order to add another abolitionist vote, but Congress shrunk it to seven in 1866 to keep Andrew Johnson from filling seats with Democrats. As soon as Republican Ulysses S. Grant succeeded Johnson, Congress set the number back to nine, where it’s remained ever since.

Sketched portraits of the U.S. Supreme Court justices through 1897.Popular and Applied Graphic Art Print Filing Series, Library of Congress Prints and Photographs Division // No Known Restrictions on Publication

In 1911, Congress did away with circuit courts altogether, so the number of Supreme Court justices stopped being contingent upon their expansion (though each justice does still oversee a region to help with occasional tasks). As for presidents shifting the number to serve their own goals, it’s now looked down upon as “packing the court.” When Franklin D. Roosevelt tried to increase it to 15 in the 1930s to push his New Deal through the Supreme Court, the Senate opposed the bill by a whopping 70 to 20 votes.

In short, the depth of the Supreme Court’s bench changed a lot in America’s early years not only because the country was expanding, but also because the federal government was still testing out its system of checks and balances. And though presidents do still appoint justices based on their own political party, we’ve gotten used to the idea that the Supreme Court is, at least ideologically, supposed to be unbiased. If Congress and the president kept up the habit of adding and subtracting justices at will, it would tarnish this ideal.

“If Congress increases the size of the Supreme Court for transparently partisan political reasons, it would cement the idea the justices are little more than politicians in robes, and that the court is little more than an additional—and very powerful—arm through which partisan political power can be exercised,” Steve Vladeck, a professor at the University of Texas School of Law, wrote for NBC News. “Indeed, that Congress has not revisited the size of the court in 150 years is a powerful testament to just how ingrained the norm of nine has become—and how concerned different political constituencies have been at different times about preserving the court’s power.”

[h/t History.com]