HowStuffWorks Newsletter Quiz

By: Contributors  | 

Thanks for taking our weekly newsletter quiz, reader! Questions and answers follow. E-mail us and let us know how you did. Have a wonderful weekend!

June 12, 2021

1. True or false: The British Royal line of succession will always go to the next male in line, even if there is an older sister.


False. Before the Succession to the Crown Act, passed in 2013, males were always given priority over females. However, the Act ended the system of "male primogeniture," so the monarchy is equally available to both sexes — the oldest child is now next in line for the throne, followed by the child next in age and so on. (This change applies only to those born after Oct. 28, 2011.)

Read more: The Tangled Line of Succession to the British Throne

2. Google continues to be the top search engine in 2021 with a whopping 92.2 percent of the worldwide market share. What company is the distant runner up?

  • China's Baidu
  • Yahoo
  • Bing
  • DuckDuckGo

Far behind Google is Bing (8 percent), China's Baidu (7.3 percent) and Yahoo (3.4 percent).

Related: Why You Should Consider Using a Private Search Engine

3. True or false: Even though there were fewer drivers on the road in 2020 (due to COVID-19), there were more fatalities in 2020 than in 2019.

True. More people died in car crashes in 2019 — a 7.2 percent increase in fact. Early numbers indicate 38,680 people died on the road in 2020, which is the largest projected number since 2007. So if Americans drove so much less, why were there so many more fatalities on the roads? Three reasons: impaired driving, speeding and failure to wear a seat belt.

Read more: Americans Drove Less, but Had More Fatal Crashes in 2020, NHTSA Says

4. True or false: On hot summer days, tires are more likely to 'blow-out' if they're underinflated.

True. Car tires are more prone to blow-out when they are underinflated. When a car is driving down a road, the sidewalls of the tires are flexing (bending, grabbing the asphalt), which creates heat. If the tire pressure is correct, then the heat created is minimal. But if the tire pressure is low, then the sidewalls have to do a lot more flexing, and create a lot more heat. Add in the summer sun and eventually the bonds in an under-inflated tire can break down and you have a blowout.

Read more: Why Do Tires Blow Out More in Summer?

5. A 2012 study by University of Michigan researchers found that about _____ out of 10 New York City residents were chronically exposed to levels of noise that were high enough to harm their hearing.

  • 1
  • 5
  • 9

Luckily, hearing aid technology is improving.

Learn more: Modern Hearing Aids Do Way More Than Help You Hear

6. In order to instigate an uprising against his ruler Persian King Darius I, how did Histiaeus (a Greek advisor) send a message to his son-in-law, Aristagoras?

  • He used urine as "invisible ink," which reveals itself over a flame.
  • He delivered a painting with an inscribed message on a concealed portion of the back.
  • He sent a normal message but italicized words to form a secret message.
  • He tattooed the message onto the head of the slave and allowed the hair to grow back, which was shaved upon arrival.

The adviser got his wish: Aristagoras stirred up the Ionian Revolt of 499 through 494 B.C.E. — Darius I ultimately prevailed, but the revolution catalyzed the Greco-Persian Wars (you know, the ones dramatized in the movie "300").

Read more about Steganography: Steganography: The Art of Hiding Messages in Plain Sight

Missed checking a previous week's quiz? We've added the answers to a bunch of those, too, below.


June 5, 2021

1. What's the most "liked" video on YouTube?

  • "Dynamite" - BTS
  • Wiz Khalifa – "See You Again" ft. Charlie Puth
  • Baby Shark Dance
  • Luis Fonsi – "Despacito" ft. Daddy Yankee

This "most-liked" and "most-viewed" video of all time has more than 44 million likes (as of May 2021) and well over 7 billion views. Shot in Puerto Rico, the insane success of Fonsi's entirely Spanish-language video is due to its appeal on an international scale.


Read more: What's the Most-liked Video on YouTube?

2. What's the difference between barbecuing and grilling?

  • They're the same thing.
  • Grilling is on a low fire, while barbecue is on a hot fire.
  • Barbecue is on a low slow fire, while grilling is hot and quick.

Barbecuing and grilling are often mistakenly thought to be the same thing but they're not. Barbecue takes place on a low fire for a long period of time ( a technique called "low and slow") while grilling refers to a quick cook on a hot fire.

Take our BBQ quiz: Come and Get It! A Spicy Barbecue Quiz

3. True or false: Royalties earned by TV actors on reruns are typically a very stable income, as long as the show remains running.

False. The amount paid out decreases after each rerun — so by the 13th rerun, the amount has decreased to 5 percent of the original fee the actor was paid for her appearance in an episode. This 5 percent will be paid every time an episode is run forever.

Read more: Can a TV Actor Live Off Royalties Forever?

4. True or false: Most reality shows have clauses that do not allow contestants or competitors to speak negatively about the show, even after it's over.

True. Contestants may also not be able to disclose anything about their experience on the show either.  In 2010, contestants on "Survivor" faced a $5 million fine every time they broke the show's confidentiality agreement. And don't think you can negotiate such clauses away — unless, perhaps, you're a celebrity or have similar clout. The courts will typically uphold these contracts. So don't count on a sympathetic judge to rule in your favor if you suffer physically or mentally afterward, or are simply unhappy with your portrayal.

Read more: 10 Secrets of Filming Reality TV Shows

5. Which of the following TV shows is not a "spin-off":

  • "The Jeffersons"
  • "Frasier"
  • "Seinfeld"
  • "The Simpsons"

Read more to find out how the rest became successful spin-offs!

Check it out: 10 Spin-off TV Shows That Made It Big


May 29, 2021

1. In 2017, approximately how many phone calls were made to 911 in the United States?

  • 900 thousand
  • 12 million
  • 240 million

A bit of history for you: Before 1968, there was no standard emergency number. People called the numbers of the nearest police station or fire department when they had an emergency. As far back as 1957, the National Association of Fire Chiefs recommended the use of a single number for reporting fires.


Related: Why Was 911 Chosen as the Emergency Phone Number?

2. True or false: Only audible noise — sounds within the range of human hearing — has the power to cause negative effects on the human body.

False. Research has linked ultrasound, which can penetrate and heat living tissue, with ailments such as dizziness, balance disturbances, tinnitus — a persistent ringing in the ears — and fatigue. Infrasound — inaudible low frequency sound — also can affect the human body.  If infrasound is the right frequency and sufficiently intense, according to neuroscientist Seth S. Horowitz, it could cause a person to see colored flashes or even experience breathing difficulties.

Related: When Sound Makes You Sick

3. True or false: In an experiment where 5,000 fictitious resumés were submitted to "help wanted" ads in Chicago and Boston newspapers, resumes with whiter-sounding names (think Emily or Greg) received 50% more callbacks than stereotypical black names (like Lakisha and Jamal).

True. In a separate experiment, even white job applicants with criminal records received more callbacks (17 percent) for the same jobs than Black applicants with no criminal record (14 percent).

Learn more: Systemic Racism Is More Than Simple Prejudice

4. Approximately what percentage of tropical storms turn into hurricanes?

  • 8%
  • 25%
  • 50%
  • 90%

About half of the tropical storms that formed over the past two decades grew into hurricanes, and about half of those became the monsters of coastal destruction we call major hurricanes. We're now accustomed to seeing about 16 tropical storms per year, though that number can vary quite a bit year to year.

Learn more: Here's How Scientists Predict the Next Hurricane Season

5. Many major cities in the U.S. have Chinatowns. How many Chinatowns is New York reported to have?

  • 3
  • 5
  • 9

New York has nine Chinatowns, according to Eater. Outside of the U.S., some of the best-known Chinatowns are located in London, Toronto, Melbourne, Australia and Havana, Cuba. The world's oldest Chinatown is in Manila, the Philippines.

Read more: The Rise, Fall and Future of Chinatowns in the U.S.


May 22, 2021

1. The flu caused 34,000 deaths in the 2018-2019 flu season and 22,000 deaths in the 2019-2020 flu season. How many deaths was the flu responsible for in the 2020-2021 season?

  • 28,000
  • 17,000
  • 8,000
  • 600

Overshadowed by a global pandemic, the 2020-2021 flu season was little more than a blip on the radar. For a virus that killed about 22,000 people during the 2019-2020 flu season, and 34,000 the season before, the influenza virus infected slightly more than 2,000 and killed only 600 during the 2020-2021 season, according to the Centers for Disease Control and Prevention (CDC).


Read more: The Flu Was Nonexistent During COVID. What Does That Mean?

2. True or false: Contemporary and modern art refer to the same movement.

False. Don't confuse contemporary art with modern art. Modern art came before contemporary art, and was a movement of the late 1800s through the mid-1900s. Contemporary art describes the artwork that is being created today.

Read more: There Are No Art Movements Today, Says Michael Rooks of Atlanta's High Museum

3. The small pocket sitting inside the right-front pocket of Levi blue jeans was originally intended to hold what?

  • Coins
  • Pocket watch
  • Matches
  • Identification

The pocket was originally intended for pocket watches, dating back to Levi's first pair of jeans that hit the market in 1897.

Related: The Ridiculous Reason Most Women's Clothes Don't Have Real Pockets

4. Fire departments across the United States responded to nearly _____ fires involving dryers per year.

  • 2,000
  • 14,000
  • 52,000

Nearly 14,000 fires involving dryers were responded to per year between 2014-2018.  About one-third of the fires were caused by dirty vents — those clogged with lint, dust and fiber. When was the last time you cleaned your dryer? 

Read more: How to Clean Your Dryer Vent

5. What country are blue jeans banned in?

  • North Korea
  • Sudan
  • China
  • Uganda

Jeans are banned in North Korea as part of a push to eliminate Western cultural influences from its society. In fact, violators of the ban could end up in a labor camp.

Read more: 5 Things You Didn't Know About Blue Jeans


May 15, 2021

1. True or false: Rewilding is different from most conservation efforts in that it doesn't just look at saving one particular animal, instead it involves dozens if not hundreds of projects that aim to enable ecosystems to restore themselves.

True. There isn't one clear definition of rewilding. However, the general purpose is to restore the abundance and diversity of wildlife to a place. It's a large-scale restoration of nature to allow nature to eventually look after itself again.


In the news: Scotland Could Become the World's First 'Rewilding Nation'

2. Each of these companies are worth more than $1 billion. Which one did Elon Musk not create or co-found?

  • PayPal
  • SpaceX
  • Stripe
  • Tesla

Elon Musk is so business-savvy that he's created or co-founded not one, not two, not three, but four companies that are worth more than $1 billion each: PayPal, Tesla, SpaceX and SolarCity.

Read more: 10 Intriguing Facts About Elon Musk

3. What part of the rhubarb plant is poisonous?

  • Leaf
  • Stalk
  • Flower head
  • Roots

Rhubarb leaves contain a lethal toxin known as oxalic acid. Although other plants contain oxalic acid in small amounts, rhubarb leaves contain a more potent dose of it, which makes them more toxic to humans.

Read more: Rhubarb: The Poisonous Veggie You Can Totally Eat

4. When was the first practical dishwasher invented?

  • 1886
  • 1922
  • 1955
  • 1978

The first practical dishwashing machine was invented in 1886 by Josephine Cochran. Her company went on to become what we know today as KitchenAid. The dishwasher was operated by hand; using a crank a person could spray soapy water into wire compartments containing dishes. The dishwasher was adopted by hotels and large restaurants. It wasn't until the 1950s when dishwashers were sold to the general public.

Related: Do You Need Soap to Get Your Dishes Clean?

5. True or false: One study found that during winter more than half of Southern California's homes featuring gas stoves had indoor pollutant levels exceeding safe limits. This can be mitigated substantially by always using a kitchen exhaust fan when cooking.

True. You've undoubtedly seen ominous smog that hangs over heavily polluted metropolitan areas. Now, imagine that your kitchen stovetop might create more pollution than some places that have famously filthy air. That's because cooking over high heat produces carbon monoxide, nitrogen dioxide, formaldehyde, fine particulate matter and other potentially dangerous byproducts. (Electric stoves don't produce carbon monoxide and only small amounts of nitrogen dioxide, though they do produce fine particulate matter.) Ducted hoods are the best solution to this problem, as they suck in contaminated air and then vent it to the building's exterior.

Read more: Time to Vent: Why You Need to Turn on the Kitchen Exhaust Fan


May 8, 2021

1. The most expensive car in the world sold for a whopping $48.4 million. What was the car manufacturer?

  • Ferrari
  • Mercedes-Benz
  • Duesenberg
  • Aston Martin

In 2018, RM Sotheby's sold a 1962 Ferrari 250 GTO for nearly $50 million. The car was estimated to bring in $45 million, so this huge price was not actually a shock when the hammer fell. Why is this old car worth so much? For one thing, it has matching numbers, which means the engine and the chassis originally came together from the Ferrari scuderia. There were only 36 built, and this was the third in that series. Legendary driver Phil Hill tested it in a race before it was sold to its first owner, who won races in it throughout the 1960s — without a single accident.


Related: 13 of the Hypest Hypercars Ever

2. Myth or fact: If you feel symptoms after receiving a COVID-19 vaccine, that means that the vaccine is working well and you'll mount a stronger immune defense against the real virus.

Myth. The bottom line is you can't gauge how well the vaccine is working within your body based on what you can detect from the outside. Different people do mount stronger or weaker immune responses to a vaccine, but post-shot side effects won't tell you which you are. It's the second, adaptive immune response that helps your body gain vaccine immunity, not the inflammatory response that triggers those early aches and pains.

Read more: What Do Your COVID-19 Vaccine Side Effects Tell You?

3. Many people have become accustomed to saying "gesundheit" when someone sneezes. The term comes from Germany and means:

  • "God bless"
  • "Health"
  • "Live long"
  • "Mercy"

The idea is that a sneeze typically precedes illness. It entered the English language in the early part of the 20th century, brought to the United States by German-speaking immigrants.

Read more: Why do we say 'bless you' or 'gesundheit' when people sneeze?

4. True or false: Restaurants in the U.S. are required to enforce "no shirt, no shoes, no service" by law in order to comply with health codes set by the U.S. Department of Health.

False. "Shirt and Shoes Required" signs never had anything to do with enforcing health codes, despite the fact that several early versions of the sign included the addendum, "By order of the Board of Health." There is no U.S. federal law that enforces this rule. However, business owners can still refuse to serve someone without a shirt or shoes. That is because they are allowed to enforce any dress code in their establishment, as long as it is not discriminatory.

Read more: Where Did 'Shirt and Shoes Required' Come From?

5. What is a "minced oath?"

  • When you tell the truth, but omit important information in a dishonest way.
  • When you substitute a taboo word for a similar sounding word.
  • When someone is paid off to lie on the stand.

"Holy cow" for example is a "minced oath." It's when you substitute a kind of maybe similar-ish-sounding word for a taboo word. That's why we have "frickin" and "dang it" and "shizz." In this case, "cow" is probably a stand-in for "Christ" so the speaker wouldn't take the Lord's name in vain.

Read more: Why Do We Say 'Holy Cow'?


May 1, 2021

1. True or false: A federal ban exists in the United States that prevents slaughtering horses for human consumption.

False. No federal ban exists on slaughtering horses for human consumption, but many states have their own laws regarding horse slaughter and selling horse meat. The ban on slaughtering horses for meat "has become an annual fight" in Congress, according to USA Today. There is bipartisan support for banning it permanently, something the Humane Society of the United States supports but the American Veterinary Medical Association does not.


Read more: Banned in the U.S.A: 8 Foods You Can't Eat in America

2. The "biggest art heist in history" occurred at the Isabella Stewart Gardner Museum in 1990 and involved two Rembrandt paintings, a Vermeer, a Manet and five Degas drawings, among a few others. What's the reward for providing information leading to the recovery of the stolen work?

  • $50,000
  • $200,000
  • $1 million
  • $10 million

That's a small penance to pay for finding these lost pieces of art. Experts put the value of loss at about $200 million. Today, the artwork is worth somewhere around $500 million.

Read more: Reviving the Story Behind the Greatest Art Heist Ever

3. What country eats the most sweets per capita in the world?

  • France
  • Sweden
  • United States
  • Belgium

A study conducted by Jordbruksverket (Swedish Board of Agriculture), found that Sweden actually has the highest candy consumption per capita in the world. The board concluded that the average Swede eats about 35 pounds (16 kilograms) of candy per year. Thirty-five pounds – that's literally three times the average amount of sugar recommended by the World Health Organization.

Read more: Swedes Love Candy So Much They Celebrate It Every Saturday

4. What animal holds the world record for having the most names?

  • Cougar
  • Donkey
  • Gorilla
  • Mallard

Often called "the cat of many names," it's referred to as the puma, panther, mountain cat, mountain lion, mountain screamer, painter and catamount, just to name a few. In fact, the cougar has more monikers than almost any other living mammal, around 40 in English alone.

Read more: What's the Difference Between a Mountain Lion and a Cougar?

5. True or false: Hornets and wasps diverged around 40 million years ago on the evolutionary tree, and represent very distinct groups of species.

False. Hornets are just a kind of wasp, and wasp is a very broad term that covers many different species with different lifestyles. Hornets are generally a little chubbier and larger than their svelte wasp brethren, and some species forego common yellow and-black striping for white and black markings. Their increased size means they also carry a substantial load of venom, so in some cases these insects are more dangerous than other kinds of wasps. Fortunately, if you leave hornets and wasps alone, they generally want nothing to do with you, either.

Read more: What's the Difference Between a Hornet and a Wasp?


April 24, 2021

1. True or false: 650 million years ago, the ocean wasn't blue — it was a shade of pink. The reason: Ancient chlorophylls of photosynthetic microbes were a dark red/purple pigment rather than the green we know today.

True. Researchers found the mighty little pink pigment in bacterial fossils from the Sahara Desert in Mauritania, West Africa. The cyanobacteria were thought to have survived on sunlight and, more than 650 million years ago, they became the dominant life form in Earth's oceans for eons. Cyanobacteria probably even predated algae, which has long been thought to be one of the earliest building blocks of the evolutionary life of larger animals. So what made these little microbes pink? The fossilized chlorophyll inside the bacteria was dark red and purple in its concentrated form, which means that when diluted by water or soil, it would have lent a pink cast to earth and sea.


Read more: Earth's Oldest Color Was Pink

2. What generation came to be known as The Lost Generation?

  • The generation that came of age during WWI
  • The generation born during the Depression
  • The generation born during the Spanish Flu

World War I had a tremendous influence on this generation. It lasted many years, and by the time it had ended, millions of men had been affected by the horrors of battle, losing a sense of the values their parents had instilled in them. War had forced this generation to grow up quickly, and for those who'd spent years in the trenches, war was all that they really knew. After the soldiers returned home, governments started ignoring their heroes, which caused the veterans to become quickly disillusioned with government.

Read more: How the Lost Generation Works

3. If a frog eats something toxic, it cannot throw it up. What adaptation do they use instead?

  • They calcify toxic material and pass in their stool.
  • They eject the stomach and its contents.
  • They store the toxins in an organ and excrete it through urination.

This is called full gastric eversion, and it's a little like dumping out your pockets. A tidy creature, the frog wipes the stomach hanging out of its mouth with its front feet to remove any stray bits. Then it packs the whole thing back into its body, where it will presumably stay until the next noxious tidbit is eaten.

Read more: Frogs Can't Vomit, So They Eject Their Entire Stomachs

4. True or false: The terms "global warming" and "climate change" mean the same thing.

False. Climate change is a long-term shift in precipitation, temperature or other climate-related variables. Global warming is a worldwide increase in average surface temperatures. The jury's in: Both things are happening.

Read more: What's the Difference Between Global Warming and Climate Change?

5. Which of these does the most to reduce a person's greenhouse gas emissions?

  • Recycling as much as possible
  • Living without a car
  • Taking one less transatlantic flight

Recycling is great. But scientists say going car-free has a much bigger impact. That was No. 2 on their list of options according to one study. No. 1? Having one less child.

Related: Top 7 Ways to Reduce Your Driving Emissions Without Reducing Quality of Life

6. One of the fastest knife throwers working today, David Adamovich, aka "The Great Throwdini," holds the record for most knives thrown around a human target in one minute, and that was:

  • 45
  • 102
  • 183

An ordained minister, former billiard hall owner and former Columbia University professor, David Adamovich now haunts the New York sideshow and burlesque culture with his own knife-throwing act.

Learn about knife throwing: How Knife Throwing Works


April 17, 2021

1. True or false: A Belgian study published in 2018 found that hypogamy, when a woman marries a man of lower social or educational background, was associated with higher divorce rates.

False. It found that neither hypogamy nor homogamy (equal statuses) was associated with higher divorce rates. It was educationally hypergamous marriages — those in which the husband was more highly educated than the wife — that had the highest rates of divorce.


Read more: The Long History of Hypergamy and "Marrying Up"

2. True or false: The fastest unmanned mission to the moon took only 36 hours to reach the moon's orbit.

True. The fastest-ever mission to the moon was the very first one: 1959's unmanned Luna 1 took just 36 hours at a speed of roughly 6,500 mph (10,500 kph). In 2006, New Horizons zoomed past the moon (not entering orbit) on its way to Pluto just eight hours and 35 minutes after launch and at a speed of 36,373 mph (58,536 kph).

Read more: How Long Does It Take to Get to the Moon?

3. When the soft pretzel was invented, what was the classic pretzel shape made to resemble?

  • The braid of a common hairstyle
  • The peace symbol
  • Two hands crossed in prayer
  • A sailor's knot

The world can thank a frustrated teacher with leftover bread dough for the invention of the soft pretzel. In 610 C.E., while baking bread, an Italian monk decided to create a treat to motivate his distracted catechism students. He rolled out ropes of dough, twisted them to resemble hands crossed on the chest in prayer, and baked them. The monk christened his snacks "pretiola," Latin for "little reward."

Read more: 10 Totally Twisted Pretzel Facts

4. What's the most popular cereal in the United States?

  • Honey Nut Cheerios
  • Cheerios
  • Frosted Flakes
  • Cinnamon Toast Crunch

According to a 2018 marketing report, it's Cheerios, with sales of $435.9 million. Honey Nut Cheerios was second and Frosted Flakes third.

Related: Why Toys and Breakfast Cereals Have Been Linked for Decades

5. What was Doc Holliday's career before he became a rambling, gambling gunslinger?

  • Doctor
  • Rancher
  • Dentist
  • Sheriff

Holliday attended the Pennsylvania College of Dental Surgery and practiced dentistry for a time. Then he realized he could make more money gambling, so he hung up his dental tools and took to that, instead.

Related: 5 Facts About the Wild West's Deadly 'Doc' Holliday

6. Which of the following is NOT true of Queen Elizabeth II?

  • She is not yet Britain's longest-serving monarch.
  • She trained during World War II as a driver and mechanic.
  • She married her cousin.

The reigning Queen reached the achievement of longest-serving monarch in 2015 when she eclipsed her great-great-grandmother, Victoria. During the Second World War she served in the women's branch of the British Army. And her husband Prince Phillip also is her second cousin.

Related: How Much Power Does Queen Elizabeth Really Have?


April 10, 2021

1. Confucius

The man we call Confucius was actually named Kong fuzi or "Master Kong" and the impact of his teachings on ethical and moral philosophy — in short, the best way to live and treat others — have echoed across the millennia.


Read more: 5 Sayings of Confucius That Still Resonate Today

2. To decrease contact between server and customer.

Tuscan Wine Windows were originally created as a way for wine merchants to safely pass their product to customers during the plague. There are said to be over 150 wine windows in Florence alone, with another hundred sprinkled under the Tuscan sun throughout the region. Due to the onset of COVID-19 in 2020, some of these charming little wine windows have been reopened, drawing eerie parallels to the plague from centuries ago.

Read more: Tuscan Wine Windows: Charming Remnants of Ancient Social Distancing

3. False

Polyphasic sleep involves sleeping for short periods of time throughout the day and night. Two of the most popular ways to polysleep are the Uberman schedule — six 20-minute naps, or one nap every four hours in a 24-hour period — and the Everyman variation, or one major sleep period, with an additional two to five 20-minute naps during the day.

Read more: How Polyphasic Sleep Works

4. False

During the 14 years of construction not one fatality occurred. Nearly 90% of the mountain was carved with dynamite. To help ensure safety and proper evacuation, young men and boys were hired as "call boys" to shout messages back and forth between the drillers suspended in chairs and the workers operating the chairs in winch houses.

Related: What's Inside Mount Rushmore's Not-So-Secret Chamber?

5. 9 months

They have a shelf life of about nine months. After that, though, the ketchup still probably won't harm you if you eat it because of those long-lasting ingredients like vinegar, tomatoes, sugar, salt and spices, but it probably won't taste like the best ketchup you've ever had, either.

Related: Top 10 Most Common Ingredients in Fast Food


April 3, 2021

1. True

There is no single 'God' in Jainism, but each and every soul can become a 'god' — a perfected being free of all karma — if it follows the right path. Jains believe that their religion, like the universe itself, is eternal and without beginning or end. The soul (jiva) is also eternal and individual, not part of a larger universal "divine" as in the Hindu concept of Brahman.

Read more: Is Jainism the World's Most Peaceful Religion?

2. False

The impossible knot got it's name not because it's impossible to tie — it's actually quite easy — but because it's nearly impossible to untie. Even though its technical name is double fisherman's knot, it's rarely used in fishing. It's common in climbing and other sports. Kayakers and canoeists, for example, sometimes use it with short pieces of rope to create grab handles for their watercraft.

Untie more: How to Tie the Impossible Knot

3. True

Glass containers for food and beverages are 100 percent recyclable, and can provide 95 percent of the materials needed to make new glass. Unfortunately, most glass waste does not get recycled in the United States. According to the U.S. Environmental Protection Agency, only 3,060,000 tons of the 12,250,000 tons of glass containers used by consumers in the U.S. was recycled in 2018. One of the biggest problems is that 80 percent of communities across the U.S. use a method called single-stream recycling, in which people put all of their recyclable waste in the same bin. This method does not work very well with glass, which tends to break in the bin or truck, which causes shards to mix with other materials.

Read more: Is Glass Recycling in the U.S. Broken?

4. 45

Incidentally, the iconic advertisement took about a 20-year break, ending in 1996 before re-upping in the late 2010s.

Take the quiz: Finish That Jingle!

5. Plastics

Phthalates are chemicals used to make plastics stronger. They are found in all sorts of consumer products we use all the time, from food packaging and cosmetics to medical supplies and even children's toys. Experiments on lab animals have found that exposure to phthalates is associated with reproductive health and developmental problems, such as early puberty and interfering with the hormone system.

Related: Phthalates Are Everywhere and Scientists Are Worried

6. Moisture

Mold is a type of fungus, and it's everywhere — indoors, outdoors and even in the air. Since molds are not plants, they do not require sunlight or CO2 to thrive. Molds grow best in warmer environments and require moisture to grow and spread.

Further reading: How Bad Is Black Mold, Really?

March 26, 2021

1. True

When it comes to recycling, "one bad apple can spoil the whole bunch." Liquid and food debris are the worst culprits. If a full bottle of water or detergent spills onto a stack of cardboard, the soggy cardboard will become a useless mush in the sorting machines. Leftover yogurt in your Chobani container will get smeared on everything around it, and the company buying that bale of plastic will reject it. To save time and money, workers in the Waste Management recycling facility will search out and throw away anything contaminated with food or liquid.

Related: How Recycling Works

2. False

In truth, all you're really doing is sending those bagged cans straight to the garbage heap. Plastic bags can get jammed in the large sorting machines at a single-stream recycling facility, when that happens, facilities have to shut down the plant and have employees go in and manually remove that film plastic. Not only is it a problem for our efficiency, but it's a safety issue for our employees that have to remove the material.

Read more: 10 Things You Can Do to Help Save the Earth

3. False

Plastic bottle caps are now recyclable, but only if they are attached to the bottle! If your local Materials Recovery Facility (MRF) says they do not accept caps on plastic containers, let them know that The Association of Plastic Recyclers (APR) supports caps and closures to remain on containers before being placed in the recycling cart or bin. Equipment and policies at the local level may take time to adapt.

You might find interesting: Top 10 Eco-friendly Substitutes for Plastic

4. False

Unfortunately, plastic utensils, styrofoam and clamshell containers are all not recyclable.

Read more: What Are Single-use Plastics and Should They Be Banned?

5. True

Pizza boxes with food or oil stains are not recyclable and are considered contaminants in recycling facilities. If the top part of the box is clean, cut it out and recycle it — the rest belongs in the garbage.

Recycle food waste with composting: How Composting Works

6. True

Plastic bags are 100 percent recyclable, just not in your curbside recycling bin. There's even a handy website,, where you can find local grocery stores and retailers that will take your old plastic grocery bags.

Related: 5 Unusual Uses for Plastic Bags

7. False

Trying to recycle something that isn't recyclable just delays its trip to the landfill. Items like styrofoam, curling irons, rubber hoses, and car parts are contaminants at recycling facilities. Often, you're better off donating to Goodwill!

Related: 5 Ways to Make My Home More Sustainable

March 20, 2021

1. Myth

Both brown and white eggs occur naturally. But really, all chicken eggs are the same on the inside. So what causes different egg colors among the same type of bird? Genetics. You can find out what color egg a chicken will pop out by examining their earlobes. More often than not, chickens with lighter earlobes tend to have white feathers, and thus white eggs, while those with colored feathers and earlobes tend to produce colored eggs.

Related: Can you freeze eggs to keep them longer?

2. Sri Lanka

Sirimavo Bandaranaike became prime minister of Sri Lanka (then Ceylon) in 1960, following the assassination of her husband, who was prime minister. She served three separate terms.

Take the full quiz: Fearless Females: Our Women's History Quiz

3. Gold

At the Bulgaria's National Museum of History lives a book comprising six pages of beaten 24-carat gold covered with Etruscan script, one of the few writing systems scholars have yet to decipher. It features illustrations of a horse-rider, a mermaid, a harp and soldiers.

Page through more: What Is the Oldest Book in the World?

4. True

"The opera ain't over 'til the fat lady sings," is attributed to San Antonio sportscaster, Dan Cook, who said it during a basketball game in the '70s. Cook later said it was a takeoff on one of Yogi Berra's well-known quips, "The game isn't over, til it's over."

Read more: If There's No Fat Lady Singing, Is the Opera Over?

5. False

In 2020, a 62-year-old former Marine set the men's planking record by holding one for eight hours, 15 minutes and 15 seconds. The current women's record, set in 2019, is four hours, 19 minutes and 55 seconds.

Get moving: Tired of Sitting All Day? These 5 Calisthenics Can Get You Moving

6. 70 days

The process of mummifying somebody was long, taking around 70 days to complete. Special priests would take out every organ (except the heart), remove moisture from the body by covering it in salts, then wrap the body with hundreds of yards of linen. It was also expensive, which is why it's the wealthy and royal ancient Egyptian people archaeologists find mummified in sarcophagi, tucked in among treasures and mummified cats and sometimes servants to take care of them in the afterlife, occasionally with their tongues covered in gold foil.

Unearth more: Why Were Two Egyptian Mummies Buried With Gold Tongues?

Originally Published: Nov 19, 2020