logo
A Mathematician Calculated The Size of a Giant Meatball Made of Every Human

A Mathematician Calculated The Size of a Giant Meatball Made of Every Human

Yahoo19 hours ago

Planet Earth is currently home to around 8.2 billion living human bodies. Virtually every one of which, when you think about it, is basically a deconstructed meatball in some variation of Birkenstocks and a North Face jacket.
You didn't think about it? Well, four years ago, a math enthusiast on Reddit did, contributing to the majestic library of online content that helps you visualize the sweaty lump of mass traditionally referred to as the human race.
"If you blended all 7.88 billion people on Earth into a fine goo (density of a human = 985 kg/m3, average human body mass = 62 kg), you would end up with a sphere of human goo just under 1 km wide," Reddit contributor kiki2703 wrote in a post I've since bookmarked for sharing at the family barbeques I'm no longer allowed to attend.
Reasoning the density of a minced human to be 985 kilograms per cubic meter (62 pounds per cubic foot) is a fair estimate, given past efforts have judged our jiggling sack of grade-A giblets to average out in the ballpark of 1 gram per cubic centimeter, or roughly the same as water. And in mid-2021, the global population was just around 7.9 billion, give or take.
The fact this roughly 500-million-metric-ton meatball would not only sit neatly inside the city of New York but could fit within the confines of Central Park with room for a queue of tourists might come as a shock to anybody who has been forced to jostle for elbow room in Times Square at midnight on New Years Eve.
How might this compare with other items on the menu, though?
If we want a sausage made from every insect, it would weigh around a billion tons. By some estimates insects are only a little less dense than water, on average, therefore easily doubling the size of our meatball.
Want a bootleg Filet-O-Fish to go with that? Current estimates of mesopelagic fishes come out around the same, at about 1 billion tons.
Of course if you're not picky and are happy to pack the planet's mass of bacteria into a giant slurpee container, you could come away with a 70 billion ton beverage that has a density just over that of water, which would help turn Manhattan into an all-you-can-eat buffet.
The fact our biosphere could all stack inside such a compact region is the real food for thought, however. Though perhaps not something that's easily digested at your next family brunch.
Sorry Mom.
The Genetic Mystery of Why Cats Purr May Finally Be Solved
There's an Invisible Line That Animals Don't Cross. Here's Why.
Dehorning Rhinos Cuts Poaching by 78% – Saving Thousands of Animals' Lives

Orange background

Try Our AI Features

Explore what Daily8 AI can do for you:

Comments

No comments yet...

Related Articles

A Mathematician Calculated The Size of a Giant Meatball Made of Every Human
A Mathematician Calculated The Size of a Giant Meatball Made of Every Human

Yahoo

time19 hours ago

  • Yahoo

A Mathematician Calculated The Size of a Giant Meatball Made of Every Human

Planet Earth is currently home to around 8.2 billion living human bodies. Virtually every one of which, when you think about it, is basically a deconstructed meatball in some variation of Birkenstocks and a North Face jacket. You didn't think about it? Well, four years ago, a math enthusiast on Reddit did, contributing to the majestic library of online content that helps you visualize the sweaty lump of mass traditionally referred to as the human race. "If you blended all 7.88 billion people on Earth into a fine goo (density of a human = 985 kg/m3, average human body mass = 62 kg), you would end up with a sphere of human goo just under 1 km wide," Reddit contributor kiki2703 wrote in a post I've since bookmarked for sharing at the family barbeques I'm no longer allowed to attend. Reasoning the density of a minced human to be 985 kilograms per cubic meter (62 pounds per cubic foot) is a fair estimate, given past efforts have judged our jiggling sack of grade-A giblets to average out in the ballpark of 1 gram per cubic centimeter, or roughly the same as water. And in mid-2021, the global population was just around 7.9 billion, give or take. The fact this roughly 500-million-metric-ton meatball would not only sit neatly inside the city of New York but could fit within the confines of Central Park with room for a queue of tourists might come as a shock to anybody who has been forced to jostle for elbow room in Times Square at midnight on New Years Eve. How might this compare with other items on the menu, though? If we want a sausage made from every insect, it would weigh around a billion tons. By some estimates insects are only a little less dense than water, on average, therefore easily doubling the size of our meatball. Want a bootleg Filet-O-Fish to go with that? Current estimates of mesopelagic fishes come out around the same, at about 1 billion tons. Of course if you're not picky and are happy to pack the planet's mass of bacteria into a giant slurpee container, you could come away with a 70 billion ton beverage that has a density just over that of water, which would help turn Manhattan into an all-you-can-eat buffet. The fact our biosphere could all stack inside such a compact region is the real food for thought, however. Though perhaps not something that's easily digested at your next family brunch. Sorry Mom. The Genetic Mystery of Why Cats Purr May Finally Be Solved There's an Invisible Line That Animals Don't Cross. Here's Why. Dehorning Rhinos Cuts Poaching by 78% – Saving Thousands of Animals' Lives

Can Your Nonstick Pan Make You Sick? We'll Explain
Can Your Nonstick Pan Make You Sick? We'll Explain

CNET

time4 days ago

  • CNET

Can Your Nonstick Pan Make You Sick? We'll Explain

A great nonstick pan can do wonders for your cooking. Nonstick cookware is coated in teflon, which makes it easy to use and clean. However, some question the safety of the chemical-coated dishes: PTFE and PFAS (used in the coating) can potentially mix with your food during use. CNET Last year, the US saw an increase in reported cases of "Teflon flu." If that raises questions in your mind, you're not alone. Several Reddit users expressed the same concerns, with some wondering whether inhaling Teflon fumes while cooking is dangerous. The good news is that if your cookware was made after a certain year and you use it properly, you should be in the clear. But there's also a bit more to the story. Here's what you need to know about Teflon flu and using your nonstick kitchenware without health worries. Read more: Never Raise Your Air Fryer Above This Temperature What is Teflon flu? Air fryer baskets are often made with a synthetic nonstick coating. David Watsky/CNET The chemical polytetrafluoroethylene (PTFE), found in Teflon and similar nonstick surfaces, is common in air fryers, pots and pans and other kitchen appliances. When these materials overheat, they can release synthetic compounds that pose health risks. Polymer fume fever, or Teflon flu, has reignited a debate about nonstick cookware safety. The illness occurs when fumes from an overheated Teflon or nonstick pan are inhaled. Nonstick pans are made with polytetrafluoroethylene (also known as PTFE). PTFEs are known as "forever chemicals" because they take decades or sometimes even hundreds of years to break down. Read more: I Upgraded to This PFAS-Free Glass Fryer and You Should, Too Under normal use, PTFEs aren't thought to cause a health risk, but when heated to above 500 degrees Fahrenheit, there are increased emissions and the resulting polymer fume fever. Polymer fume fever causes a range of reported symptoms including fever, chills, muscle tension and headache. Symptoms of Teflon flu are temporary and generally start within 12 hours of exposure but can take up to 24 hours to take hold. How to avoid Teflon flu Teflon and nonstick cookware are easy to use, clean and maintain, but it should be used only for low to medium heat cooking. Never heat your nonstick cookware over high heat or medium heat for long periods of time. Try to keep the surface temperature at or below 450 degrees Fahrenheit, or emissions from the PTFE coating are likely to increase. What is Teflon and does it cause cancer? Nonstick or Teflon is a popular choice for home cooks. The biggest advantage is that food won't stick to pots and pans coated with Teflon the way it does to other metal materials, so it's easy to flip a pancake or remove a cooked egg. Nonstick is also very easy to clean, generally taking no more than a few seconds to wash by hand. Teflon is a brand name for a synthetic chemical called polytetrafluoroethylene that's used in many household products, from wire coatings to fabric protectors and kitchen cookware. The knock on Teflon is that it's unsafe if consumed or absorbed into the body and can increase the chances of cancer and other diseases. Studies have shown some connections (more on that below), but Teflon still exists and is used to make cookware, and the safety concerns around Teflon are mostly a thing of the past. I stress mostly. Here's why… The brand Teflon may be associated with a risk of cancer, but it's actually a chemical formerly used in the making of Teflon called PFOA that's to blame. According to the US Centers for Disease Control and Prevention, perfluorooctanoic acid is a manufactured perfluorochemical developed in the 1930s and used to make fluoropolymer coatings and products that resist heat, oil, stains, grease and water. Thanks to a federal ban, all Teflon and nonstick cookware made after 2013 should be free of harmful PFOA. Europe enacted the same ban in 2008. All-Clad What are the negative effects of PFOA? In some studies, PFOA has been linked to cancer, immune deficiency and a host of other medical problems. It has also been shown to affect growth and development and injure the liver in laboratory animals. As recently as 2017, chemical giant Dupont settled a lawsuit for more than $670 million for its role in contaminating drinking water with PFOA (also referred to as C-8) in the mid-Ohio Valley. A previous class-action suit from 2004 in the same area led to a study that found PFOA was linked to cancer and compromised immune function, even in small doses. Teflon cookware made before 2013 may be toxic All that was enough for most manufacturers to halt the production of nonstick coatings using PFOA around 2002. Teflon using PFOA wasn't officially banned in the United States until 2014. Europe banned it in 2008. That means if you own Teflon nonstick cookware from 2013 or earlier, there's a chance it contains PFOA. Nine years is typically longer than the average lifespan of a nonstick pan, but if you're not sure, it's probably best to replace any Teflon-coated pots or pans. If you're concerned, look for PFOA-free cookware Because of the ban, all nonstick cookware made in the US should be PFOA-free, but you'd be wise to make sure. Be extra cautious about buying cheap or off-brand cookware, especially if it's not produced in a country with an active PFOA ban. PFOA is still produced elsewhere, largely in China, and used to make consumer products. The good news is that PFOA-free nonstick cookware is cheap, so there's no reason to risk it with anything that might contain the chemical. You can nab a 10-inch skillet from a trusted cookware brand like Misen for $99 or Tramontina for about $30. Luxury cookware brand All-Clad makes a two-piece nonstick cookware set for $60. The Always Pan is a nonstick ceramic alternative to Teflon cookware. Our Place The best natural nonstick cookware alternatives If you're ready to ditch Teflon and chemical-based nonstick pots and pans, there are plenty of more natural nonstick alternatives. The most nonstick of the bunch is ceramic cookware, which has seen a boom in popularity since concerns about Teflon first surfaced. A few popular ceramic cookware options include The Always Pan (read my full review here), Caraway and Greenpan. Cast iron is another cookware material that develops a natural nonstick coating over time, especially if you season it well and care for it properly. It won't likely ever become as nonstick as Teflon, but cast iron has loads of other culinary benefits that are worthy of a few extra seconds of scrubbing in the sink after use. Lodge is a tried-and-true cast-iron cookware producer: You can scoop up a 10-inch skillet for as little as $20. Cast iron develops a nonstick patina over time and is a natural alternative to Teflon. Angela Lang/CNET Carbon steel is yet another option and functions similarly to cast-iron cookware, although it's not quite as heavy, slightly more sensitive to corrosion, and typically more expensive. Carbon steel hasn't really popped off here in the US but is a favorite of professional chefs, as well as yours truly. Cookware startup Made In produces some excellent carbon steel cookware with prices starting around $89, but there are cheaper options out there. FAQs Should I worry about buying Teflon nonstick cookware? The Teflon brand stopped using PFOA, the offending chemical behind Teflon flu, in 2013. That means that it should be safe to use new Teflon cookware any way you see fit -- although it couldn't hurt to continue being cautious when using new nonstick cookware. Can I only catch Teflon flu from Teflon products? No. The name Teflon flu originates from the Teflon brand because they famously used PFOA chemicals in the process of creating its cookware before 2013. However, that doesn't mean your cookware is PFOA-free. If your cookware is created in the US, it should be free of harmful chemicals. But cheap companies and off-brands that create cookware in countries without PFOA bans often still use the chemical in their products, and those might still wind up in your hands.

Out of (the Derm's Office): How do at At Home Lasers, LED Masks, and Microcurrent Devices Compare?
Out of (the Derm's Office): How do at At Home Lasers, LED Masks, and Microcurrent Devices Compare?

Vogue

time6 days ago

  • Vogue

Out of (the Derm's Office): How do at At Home Lasers, LED Masks, and Microcurrent Devices Compare?

I used to think a grown woman could care for her face with her own two hands, but then the Clarisonic was invented to disabuse me of such notions. It was 2004, and I was a middle schooler who believed there was no problem astringent toner couldn't solve. It would be decades before the advent of $2,700 at-home lasers and multipronged microcurrent devices that promised to 'retrain the Golgi tendon.' The most advanced grooming instrument I owned was a flatiron. I saved up for the Clarisonic, as did a lot of other women and girls. It became so popular it was at one point sold in more than 50 countries. I used it with fervor, like a ritual object that might hasten transformation. The Clarisonic—humming, oscillating, exhuming dirt in the manner of an orbital sander—showed me that the path to a radiant complexion was paved with an electrical charge. The brush was more than a pint-size power tool. It was a first mover—a $195 contraption that created an entire class of skin care. I was hooked. Clarisonic is gone now (it turns out obliterating the skin barrier with a bacteria-filled brush is not best practice), but the device market has exploded—perhaps a consequence of our relentless drive to optimize. There are newer 'smart' facial cleansers and at-home laser hair-removal gizmos. There are more LED light masks than there are midsize SUVs. Some boast about clinical trials. Most have fuzzier distinctions—FDA-'cleared' or 'dermatologist-approved.' Whatever the bona fides, the sector has obvious appeal. Who isn't interested in no-needle solutions to fine lines and magnified pores, available (for a price) from the comfort of the couch? But there is still the matter of whether the tools work. I scour Reddit forums and watch YouTube video tutorials. I read reviews from users who describe glass skin and vanishing melasma. I examine before-and-after photos like I'm assessing diamonds through a jeweler's loupe. I decide to cast a wide net, procuring not just LED masks that make me look like a Marvel villain, but a helmet that blasts hair follicles with a spectrum of red light, a light-​saber-looking stick called the Skorr Glow that Julianne Moore likes to post about on Instagram, a 'depuffing' wand to coax cheekbones out of hiding, and several other devices, most of which invite me to download an app. Peer-reviewed research on the apparatuses is scant, but the most robust evidence seems to back LED-based (or light-emitting diode) therapies, which expose the skin to light at specific wavelengths. Red light in particular is thought to improve blood flow and boost the 'powerhouses' of cells to produce collagen, while blue light is said to target the bacteria that fuels acne. There's also some literature to support the use of microcurrent, which stimulates tissue beneath the skin to tighten and tone. Studies show both a lot of theoretical promise and a lot of remaining questions about whats these interventions can achieve. Hoping to make sense of the tangle of both research and cables, I reach out to facialist Raquel Medina-​Cleghorn, whose beloved skin-care studio Raquel New York is a stark white, sunlit emporium that backs up its woo-woo vibe with an obsessive emphasis on evidence-based modalities. Medina-Cleghorn tells me she prefers the Therabody TheraFace Mask for its three LED treatment modes—red light, blue light, and infrared light. She proceeds to throw around terms like 'adenosine triphosphate' and 'collagen proteins,' but I'm so captivated by the promise of wrinkle reversal that I find it difficult to focus. Later, in an attempt to get organized, I divide the tools I've amassed into categories and devise a schedule to test them. I start with red-light devices, zeroing in on popular versions from CurrentBody and Shark Beauty. The former costs $470 and is meant to be worn three to five times per week. The latter retails for $350 and includes 'under-eye cooling' pads to 'tighten' and 'soothe' delicate ocular skin. Consistent use of either is supposed to improve plumpness for an 'iconic glow.'

DOWNLOAD THE APP

Get Started Now: Download the App

Ready to dive into the world of global news and events? Download our app today from your preferred app store and start exploring.
app-storeplay-store