A glass of wine vibrates at a regular frequency, and a high musical note can break such a glass. The frequency of the musical note must be equivalent to the natural frequency of the glass. Because the frequencies of the note and the glass are the same, the energy is transferred to the glass, which vibrates so violently that it shatters. The phenomenon is known as resonance. The technique can be used to improve the sound of some musical instruments.

People found this extremely frustrating because round pencils frequently rolled off surfaces. As a result, the popular hexagonal pencil shape was introduced. People used to use breadcrumbs to erase their mistakes before erasers were invented.

The risk of heart disease and stroke can rise when one breathes in contaminated air. It aggravates asthma symptoms and even has been linked to lung cancer. We are urging the government to phase out diesel vehicles by 2025 as a starting step in addressing this. The human costs of both indoor and outdoor air pollution are horrendous; air pollution is a factor in millions of preventable deaths each year.

Chile, with slightly over 1300 volcanoes, is one of the countries with the most, and many of them are currently active. Cerro Arul, Cerro Hudson, and Villarrica are three of Chile's most visible and historically active volcanoes. They are all composite volcanoes, sometimes known as stratovolcanoes. Climbers from all around the globe like putting their abilities to the test on climbs up these volcanoes.

Karl Landsteiner identified blood types in the early 1900s, and that some types cannot mix. There are several ideas as to how these classifications came to be, but the subject of why humans have various blood types at all remains unresolved.

Rio de Janeiro is no longer Brazil's capital, but it was from 1763 until 1960. The capital designation was shifted to Brasilia, which is located in the country's center, in 1960.

The second of our fascinating mirror facts is that acoustic mirrors are those that reflect sound waves. Mirrors were used in the Second World War to detect sounds coming from enemy aircraft prior to the development of radar.

With four Best Actress Oscars to her name, Katharine Hepburn is the actress with the most of them. With a total of 4 awards under his belt, Clint Eastwood is the male actor with the most Oscars; however, he didn't receive any for acting. For Unforgiven and Million Dollar Baby, he received two Oscars for Best Director as well as two for Best Picture.

It's true whether you believe it or not. Pineapple contains an enzyme called bromelain, which is a little-known fact. If you read other sources, you'll notice that they all say pretty much the same thing. This enzyme degrades proteins in your mouth, specifically your taste buds. This can ruin your palate for the rest of the day until your mouth heals. A fun fact that many people believe is that the enzyme bromelain is used in meat tenderizer. Pineapple is a fruit, so it's good for you. However, you should let a freshly sliced pineapple sit in the fridge for a few minutes before eating it so the enzymes can break down.

Alabama residents who dress in clergy attire are thought to be breaching the law and might face a $500 fine and up to a year in jail. Reminder to self: don't dress up as a priest, rabbi, or nun on October 31 in Alabama.

According to swissinfo.ch, Switzerland has one of the greatest shares of internationals among other nations, accounting for around 24.6% in 2015. More over 80% of foreigners in Switzerland are from Europe, with nearly half coming from France, Germany, Italy, and Portugal alone. Switzerland leads the European immigration countries, with 19 arrivals per 1000 population on average in 2014, considerably ahead of Germany (11), the United Kingdom (9.8), Spain (6.6), and France (5.1).

Because it can be changed or amended, our supreme law is referred to as a "living document." Those who designed it wanted it to reflect the aspirations of our citizens and were aware of the need for changes. Constitutional amendments refer to changes made to the Constitution. The document has been amended 105 times, the most recent of which occurred in August 2021.

When luciferase was first discovered, fireflies were the only source of the chemical. Even though synthetic luciferase is now readily available, some businesses continue to collect fireflies, which may be a factor in their decline.

History was made on 1 April 2001 when the Netherlands became the world’s first country to legalize same-sex marriage. Job Cohen, the mayor of Amsterdam at the time, married four couples at midnight on 1 April to mark the occasion. Many same-sex couples have since happily tied the knot. 

Amsterdam is also known for being one of the world’s most LGBTQ-friendly cities, with plenty of gay bars. You can also see the Homomonument in the city centre, a tribute to gay men and women.

When pirates wore earrings, they weren't just trying to look fashionable. According to National Geographic, sailors believed that applying pressure to the earlobe would keep them from getting seasick. In many cases, the pirates would do so by putting on an earring. Unfortunately, while your inner ears affect your sense of balance, wearing earrings in your earlobes does not affect seasickness.

Sharks have microscopic teeth called epidermal denticles that cover their bodies. Because of this, their skin feels like sandpaper.

Bed bugs are nearly impossible to eradicate and can spread as quickly as water cooler gossip. But it's also possible that's why they've lasted so long. According to a 2019 study published in Current Biology, scientists believe that the bugs have been around since the time of the dinosaurs, first appearing around 115 million years ago. "It was a revelation to think that the pests that live in our beds today evolved more than 100 million years ago and were walking the earth alongside dinosaurs," said researcher Mike Siva-Jothy. "It demonstrates that the evolution of bed bugs is far more complex than we previously thought."

In 1901, Annie Edson Taylor, a 63-year-old teacher, was the first to take this spectacular voyage down the surging waters of Niagara Falls in a self-designed barrel constructed of iron and oak and padded with a mattress. While she survived, such a trip is not recommended for obvious safety reasons, and individuals who try a reckless act over Niagara Falls face a hefty fine as well as the expense of rescue. Over a dozen additional individuals have gone over the falls since Taylor.

Remember how everyone was worried about ebooks taking over the print sector a few years ago? That did not take place. Ebook sales have been progressively declining, and this trend appears to be continuing. People, it turns out, adore tactile, actual, flip-the-page books!

While there is no commonly accepted definition of a conspiracy theory, a fair rule of thumb is that a conspiracy—and thus a conspiracy theory—involves a group of individuals doing covert acts that infringe on the rights of others or disadvantage them.

Dick Clark took over as host of the show in 1974. Clark suffered a stroke in December 2004, and Regis Philbin took over as host at the last minute. Clark officially gave over hosting responsibilities to Ryan Seacrest in 2005.

Venus flytraps feed on a variety of insects and arachnids. Crickets, beetles, grasshoppers, spiders, snails, ants, worms, and, of course, flies are all prey. The Venus flytrap will most likely be able to capture the bug as long as it is tiny enough to fit in a trap. The prevalent misconception that Venus flytraps are only used to catch flies is erroneous. In the wild, Venus flytraps not only have a diversified diet, but their primary prey are frequently ants and crawling insects.

The leathery smell in Chanel’s Cuir de Russie comes from an ingredient originally derived from the abdomen of beavers. Called Castoreum, there’s a fruit-scented extract that is taken from the abdominal glands of beavers and used in perfumes. It is supposed to smell sweet, warm, and animalic. However, since the animal has to be killed to remove the sac which contains this “castor”, perfumes that contain this scent use synthetic recreations of the note.

Shells left over during lobster processing are typically discarded in landfills. A University of Maine researcher designed golf balls with a core made of lobster shells in an effort to make them valuable and keep the money in the lobster industry. They're also biodegradable, making them ideal for golfing on cruise ships or on courses near bodies of water.