Randall Munroe has posted a chart comparing the earth's holes at xkcd. There's a lot of information, so you will want to see the full-size version here. This might remind you of the ominous depth comparison video from a few years ago, but here you can see how these holes compare next to each other and to sea level. You'll notice some holes that are pretty deep start at higher elevations, and the Jinping Laboratory in China has an impressive hole that doesn't go down at all. The word "oops" made me go look up the Retsof Salt Mine, which has a wild story. We knew Lake Baikal in Russia is the world's deepest lake, but the sediment underneath indicates it was once much, much deeper. But not as deep as the Kola Superdeep Borehole. It's amazing that we have two manmade holes that are deeper than the Mariana Trench.  



If any of these locations pique your interest, there is information and links for each of them at Explain xkcd.  -via kottke 

Today I learned that if you live in Denmark, particularly the Jutland region, and aren't married by age 25, you may be assaulted with cinnamon. Your friends will find you, and maybe douse you with water first or mix the cinnamon with water or eggs to make it stick to you better. The more public the ritual, the better, so the evidence can be smelled for days afterward in some cases. However, those are somewhat rare, and many friend groups just use a little cinnamon or give a gift of cinnamon. Still, you might want to be equipped with a mask for your 25th birthday. 

This tradition grew out of an even earlier tradition that labeled people who were still single at age 30 as pebersvend, meaning "pepper guy" or pepermø meaning "pepper maiden." This comes from the 1600s, when spice traders tended to stay single longer because they were busy traveling the world, although the backstory varies somewhat. Pepper attacks can be dangerous, so the tradition is to give a single person a pepper grinder for their 30th birthday. This has escalated to the construction of huge pepper grinder sculptures made from oil barrels to erect outside the home so that everyone will see it. Some of them can be very suggestive.   

You can learn more from the commenters who've experienced this as either a perpetrator or recipient at reddit. 

(Image credit: Lagrangian21) 

Remember Robert Maddox, the Crazy Rocketman (previously at Neatorama)? He's in his 70s and feels the need for speed. He also sells rocket engines. Maddox is living his best life now as a pirate. 

Maddox figured out how to repurpose an old cannon to direct a 240 pound thrust pulsejet engine to rocket power his boat. As he tested how fast he could use it to get away from shore, he almost killed the guy helping him launch in the process (twice). Max got away, though, and managed to operate the drone camera filming this nonsense, augmented with a selfie stick. Imagine Pirates of the Caribbean with this kind of thrust. 

The next step was to make Captain Bob's 12-foot aluminum boat into a pirate ship, complete with flame effects and Jolly Roger flag, although not enough room for a plank to walk nor anyone to walk it. It's hard to mutiny on a solo voyage. -via Born in Space 

Ladies!! Did you know that some grocery stores in Finland have a pink basket that means you’re single and willing to be approached? Should we get these in the states?

Good morning X. pic.twitter.com/HUwGiewqJ7

— Richie Rich (@gofishh77) July 12, 2026

One of the first tasks when trying to secure a romantic partner is determing if the person of interest to you is available. Instagram user Roya Fox says that one signal of availability in Finland is to use a pink shopping basket.

Some of Fox's commenters share that in Spain, this signal is displayed by placing a pineapple in one's basket.

I love these ideas! Let's make it easier for people to find relationships.

-via Wilfried Reilly

In the 1880s, French criminologist Alphonse Bertillon introduced the standardized mug shot as a way to identify criminals. This was accompanied by his thorough system of measurements of the person, from height to the width of a foot. 

In 1903, the clerk at Leavenworth prison logged in a new inmate named Will West. Checking the records, he found that Leavenworth already had an inmate named William West who'd been there for two years. His mugshot (at the bottom in the image above) looked a lot like the new prisoner Will West (pictured at top), and his measurements, as recorded in the Bertillon System, were identical. Could these two prisoners be one and the same? The case is often cited as the death knell of the Bertillon System and the complete adoption of fingerprint identification of prisoners, although mug shots remained. Will West and William West had very different fingerprints. 

What throws a wrench into that story is the fact that Leavenworth prison did not adopt fingerprint identification until 1904. That's when the two Wests were first fingerprinted, so the prison had to have used a different method of keeping the two inmates straight until then. Read about Will West, William West, and the way we identify prison inmates at Utterly Interesting. 

You know the story of the Trojan Horse, of course, because you've read Homer's Iliad, the epic poem about the Trojan War, right? No, because you haven't read it, and also because the Trojan Horse isn't in the Iliad. But you know the story of how the Greeks won the war against the city of Troy after ten years by leaving a gift of a massive wooden horse behind, which the Trojans accepted and brought into the city gates, not realizing it was full of Greek soldiers. It only makes sense the Trojans would do that, despite the horse's odd weight, without looking to see what was inside. 

Is there any truth at all to the story? We once thought that the city of Troy was itself fictional, until Heinrich Schliemann found it in Turkey (and dug right through the layer that would have existed at the relevant time). But that doesn't mean there actually was a ten-year war. And while the tale of the Trojan Horse was layered with supernatural deeds by Greek gods, that was normal for both historical and fictional accounts in ancient Greece. Weird History looks at the story of the Trojan Horse, and reveals some theories about how it could have happened, whether it did or not. 

A couple days ago, I mentioned some of the exotic and eccentric foods that will be available at the upcoming Iowa State Fair. Inventive dishes at state fairs is very much a Midwestern thing and Minnesota consistently offers competition, such as soft serve beer.

This year, the Minnesota State Fair takes place August 27 to September 7 in St. Paul. The organization has already announced new foods that will be available, including a variety of dishes of Hmong and Vietnamese influence. I'm looking forward to the Butter Brew Mustache Pretzel, which is a traditional pretzel in the shape of a mustache--something that children would enjoy playing with. It's served with vanilla soft serve ice cream as a dip.

-via Nag on the Lake

One Instargam commenter quips, "The Ring but make it Renaissance." That's about right. Tanya Gomelskaya composes photorealistic paintings and sculptures that emerge from the canvas. It's not that the subject looks at the observer, but the subject pursues the observer beyond the frame of the canvas.

Most kisses in 30 seconds by a pair 😘 195 by Renato Bayma Gaia and Naiara Roberta Ribeiro de Marins 🇧🇷 pic.twitter.com/CnGeN0G8E8

— Guinness World Records (@GWR) July 10, 2026

I saw this tweet and immediately turned to my wife and proposed that we try to top this record. She rolled her eyes and went back to her book.

So I guess you could say things are getting pretty serious.

Mind you, we'll have serious competition. Renato Bayma Gaia kissed his girlfriend, Naiara Roberta Ribeiro de Marins, 195 times during a 30 second period. These Brazilians now carry a prestigious and decidedly romantic title.

YouTube has been around for 21 years now, longer than many of its users have been alive. It exploded quickly, because it was free and easy to use, and it offered a platform for all kinds of creativity. That includes horror, and YouTube horror shorts soon proved that you don't need 90 minutes of film and a substantial budget to scare the pants off everyone. It also helped that you didn't have to telegraph your intentions ahead of time, proven by the 20-second film Relaxing Car Drive from 20 years ago that was anything but. 

YouTube horror shorts rely more on innovative ideas than cast or budget. They simply place you in a scenario that produces dread or horror that often isn't explained at all, but can still leave nightmares. Anna Dupre has compiled a history of YouTube horror shorts with plenty of embedded examples and links to quite a few more, in case you haven't been scared enough today. -via Nag on the Lake

In 1973, Mexican anthropologist Santiago Genovés put 11 young adults, including himself, on a raft sailing from the Canary Islands across the Atlantic for more than three months to Cozumel island, Mexico. He expected to document the power struggles, sexual jealousy, and violence that would inevitably overwhelm the group. Kind of like a reality TV show. But you know what they say about assumptions. 

I had heard about the Acali raft experiment, which was the subject of a full-length documentary, but didn't know a lot about it until I watched a video today. It was interesting, but with an AI-generated narration and images, I didn't want to post it. Then I spotted a video from three years ago with the exact same title, and it has most of the same narration and actual footage of the event. The newer AI video has an update about a reunion of the surviving participants, who had a wonderful time meeting up with each other 45 years later to make the documentary. 

Trendy young people make a big point of staying hydrated, and honestly, they are on to something. Giving your body plenty of water makes you look and feel younger, improves your mood, and can help you tolerate a heat wave. But you don't have to follow a strict regimen to improve your own health with water. The most important thing to know is that if you wait until you are thirsty to take a drink, you are probably already dehydrated. I was hospitalized for dehydration once, and it's no picnic. 

However, some of the scarier "rules" you've heard about hydration are things you don't need to worry about. Should you add electrolytes to your drinks? Does caffeine cause dehydration? How about alcohol? Is there anything better than water for hydration? And how much do you really need to drink in a day? For some questions, it just depends on whether you are a hard-working athlete or a regular Joe. Older people, those who take certain medications, and people who work outside in summer also need to pay attention to their water intake. As for how much to drink, the answer is usually just "more." Learn the basics of proper hydration without the hype at Science Focus. -via Real Clear Science 

Killer turtles with poison spears! Invaders of the slime glass fortress! The ballistic torpedo shark! These creatures sound like they came from a 1950s B-movie, but they are real, and they are dangerous. We humans simply ignore them, because we can't see them and barely know about them. These are protists, mostly single-celled organisms that are neither animal, plant, bacteria, or virus, but are the ancestors of them all. Now they feed on their descendants, with an amazing variety of weapons that are hard to believe possible from a single cell. The prey they feed on are also quite small, and some protists are even beneficial to humans by controlling the species they eat. Kurzgesagt introduces us to three of the weirdest predatory protists, to show what an amazing world lies underneath us while we don't pay attention. This video contains a sponsor message from 3:47 to 5:04, and the last minute is promotional. -via the Awesomer 

Were you able to attend the wedding of Taylor Swift and Travis Kelce? No, well, were you able to acquire garbage from it?

No?

Well, I'm sorry, but you're now otu of luck. Yahoo! Finance tells us that Justin Cignac, an artist from Queens, collected garbage from the spectacle and then sold it to interested collectors for $25 per container.

Collecting and selling garbage is one of Cignac's core markets. He's been doing so with New York City garbage since 2001. People from all over the world are apparently interested in buying NYC trash, so he makes a good living from it.

-via Wesley Todd | Photo: Eva Rinaldi

One problem with history that goes way back is lack of documentation. We didn't always have writing, and even when we did, records could be destroyed by war, natural disasters, and even neglect. Oral histories become distorted or embellished over time. That applies to many historical figures that are now considered fiction, even if they were inspired by someone at some time who really existed. The biggest example is King Arthur, who may or may not have been a real person, but historians believe he wasn't a king and most likely wasn't named Arthur. He is just one in a long line of folklore tales that were told as factual or fictional depending on when the story was told or who told it. 

An example from the list is William Tell. The story of Tell successfully shooting an apple off the top of his son's head, under pressure of course, is important in the story of the founding of Switzerland in the 14th century. But Tell didn't appear in the literature until more than a century after the events supposedly took place, and some points of the story are contradictory. Maybe someone greatly distorted the story, or maybe it was completely made up after the fact. Read about Tell and four other historical figures that never existed at all at Mental Floss. 

(Image source: Library of Congress)