Online quiz on culture, curiosities and smart challenges

Create visuals without being a designer
Gamma.app
Creates professional presentations and websites in minutes.
You just describe the idea. It builds everything. Forget PowerPoint.
Gemini (Google)
Image generation with real editing capabilities.
No more “almost there.” Adjust, refine, and finalize without starting over.
Write better (and much faster)
Claude.ai
Human-like reasoning and writing.
Less rewriting, more clarity and flow.
Wispr.ai
Speak, it types.
Learns from your corrections.
80 words/min → 200+.
Research and analysis without pain
NotebookLM (Google)
Upload PDFs, articles, and documents.
Chat with your content as if someone already read everything for you.
Grok
Real-time answers connected to X.
Perfect for trends, current context, and breaking news.
Video without an editing team
Opus.pro
Turns one long video into 20 clips ready for Reels and Shorts.
4 hours of editing → 4 minutes.
Granola.ai
Transcribes meetings and generates actually useful notes.
No invasive plugins, no interruptions during calls.

Beer Was Safer Than Water
In the Middle Ages, water was often contaminated, while boiling beer wort killed bacteria.
Children and adults drank “small beer” daily as a safe and nutritious beverage.
This shows how beer was an essential part of the diet and public health at the time.
The Monks
During Lent, monks brewed strong and nutritious beers.
The drink was called “liquid bread” and did not break the fast.
Beer served as a source of energy and nutrients during periods of dietary restriction.
Hops
Before hops were used, herb mixtures called gruit flavored beer and added various properties.
Some of these herbs had medicinal or even hallucinogenic effects.
This shows how beer historically had both recreational and therapeutic functions.
Women Ruled Beer
The first brewers were women, known as alewives.
The use of cauldrons and tall hats gave rise to stereotypes associated with witches.
This highlights the importance of women in brewing traditions before industrialization.
Beers That Survived Wars
During world wars, beer recipes were hidden to prevent them from being lost.
These secret formulas were passed down from generation to generation.

She saw herself first as a songwriter
Amy always considered herself a writer of emotions before being a singer.
Her lyrics were almost always autobiographical, describing love, pain, and personal experiences.
The melody came later, as a way to bring to life the words she had already written.
The look was armor
Her iconic hair, eyeliner, and tattoos had a purpose beyond aesthetics.
Amy used her exaggerated image to protect herself from deep insecurities.
It was a way to create a “barrier” against the world.
Back to Black
Amy’s most famous album was created during a period of intense personal pain.
She recorded many songs almost without editing to capture raw emotion, making the album a direct window into her heart.
Each track reflects experiences of loss, love, and suffering, like a musical diary.
She rejected the label of pop icon
Amy was inspired far more by jazz, soul, and classic blues than by modern pop.
Commercial success was never her main goal.
She sought musical authenticity, not fleeting fame.
Her greatest struggle was silence
More than drugs or public exposure, Amy faced extreme loneliness and anxiety.
Music was her way of expressing what words could not convey.

The Apocalypse
Many viewers spend the series trying to discover the virus’s origin, but Robert Kirkman, the creator, made it clear: it doesn’t matter. The focus is on humans — how people behave when society disappears, when there are no laws, comfort, or security. The virus is just a catalyst that reveals who people really are.
The Infection
The famous reveal that anyone becomes a zombie after dying was planned from the first season. It completely changes the perception of death: even “natural” or accidental deaths have an impact because transformation is inevitable. The threat isn’t just the undead; no one is truly safe.
Rick Could Have Died Early
In the comics and the original plans for the show, Rick Grimes wasn’t meant to survive this long. His survival extended the story arcs of characters like Daryl, Michonne, and Carl.
Zombies
In Season 1, zombies were smarter, but this was removed to show that the real danger comes from humans, not the undead. The series emphasizes that in a lawless world, people are more threatening than zombies.
The Ending
The series shows that surviving isn’t enough; what matters is the impact we leave and the world we help rebuild.

Eleven was almost a boy
In the early drafts by the Duffer Brothers, the main character was written as a different gender. By changing Eleven into a girl, the series gained a stronger emotional layer: apparent fragility versus extreme power, as well as themes of motherhood, friendship, and identity.
The Upside Down came before the story
Unlike the usual process, the creators first developed the universe: physical rules, climate, creatures, and the limits of the Upside Down. This made everything feel more real and consistent throughout the seasons.
Hawkins is a fictional town
Although it looks like a typical 1980s American town, Hawkins does not exist. Filming took place in several cities in Georgia, chosen for their urban aesthetics and forests that matched the show’s mysterious tone.
The Demogorgon was almost abstract
The creature was inspired by sharks and carnivorous plants, with the initial idea of being less human and more unsettling. The final version received a more “monstrous” look to create stronger visual impact and fear.
Inspired by real experiments
The Hawkins Laboratory was inspired by Project MKUltra, a real CIA program that investigated mind control using controversial methods. This makes the series even more disturbing by blending fiction with historical facts.

1. A universe built by players
Since 2006, Roblox has allowed anyone to create and play unique worlds. Thousands of games are made by the community, from epic adventures to wacky simulations.
2. A billion-dollar community
Some creators have earned millions from their games, turning fun into a business. Roblox’s economy is real and very active.
3. Engaging events
Constant updates and themed events add stories and challenges, keeping players hooked for years.
4. Loved by kids and teens
Over 50% of the player base is under 16. The platform combines creativity, competition, and social interaction in an irresistible way.
5. The legacy of David Baszucki
Roblox creator David Baszucki turned a simple idea into one of the world’s largest gaming platforms, inspiring millions to create and innovate.

Juan Pujol García (1912–1988), codename Garbo, was the spy who fooled Hitler on his own. He created a fictional network of 27 agents that never existed, sending detailed reports with deliberately human errors. His cunning changed the course of the war.
Who he was
• Spanish, ordinary childhood
• Initially uninterested in politics
• Offered his services to the British and then deceived the Nazis
How he fooled the Nazis
• Created 27 fictional agents in Europe
• Sent convincing reports with strategic errors
• Gained the full trust of the German High Command
• Manipulated information subtly and creatively
Contribution to D-Day
• Hitler, misled by Pujol’s reports, positioned troops in the wrong place
• Helped make the Allied landing in Normandy easier
After the war
• Survived and kept his network secret
• Received British and Spanish honors
• Remembered as the spy who defeated Hitler without firing a shot

Have you ever studied something and, hours later, realized that almost nothing stayed in your memory? The problem isn’t laziness, it’s how the brain processes information. Most conventional methods focus on quantity, not on the quality of cognitive processing.
The psychological trick to learn faster is to turn any information into an active experience. In other words, it’s not enough to read, listen, or watch — you need to interact, question, and apply.
It works in three steps: 1) Activation: turn each piece of information into a practical question, like “How can I use this in daily life?” or “What problem does this solve?” This creates lasting connections with what you already know. 2) Consolidation: explain or teach the content out loud, even if only to yourself. Studies show that teaching can increase retention by up to 90%.3) Application + mindful breaks: after each study block (15–25 minutes), take micro-breaks of 2–5 minutes, breathing or observing your surroundings. This helps the brain consolidate information and reduce cognitive stress.
During the process, the brain reorganizes memories, strengthens neural connections, and turns information into practical knowledge. Unlike generic advice like “make summaries” or “use mind maps,” this method shows how and why it works, helping you learn faster and apply knowledge effectively.

If you feel like you can’t concentrate, it’s not a lack of willpower. The modern brain is overloaded: notifications, social media, and information overload keep the mind in a state of constant alert, draining energy and attention. Multitasking and cognitive overload increase stress, impair working memory, and make any complex task harder.
The good news is there is a 5-minute mental reset that really works. It doesn’t force concentration but creates conditions for the brain to reorganize. It works in three steps:
Complete disconnection (1 min): step away from screens and interruptions;
Mindful breathing (2 min): inhale for 4 seconds, hold for 2 seconds, exhale for 6 seconds;
Present-moment awareness (2 min): notice sounds, bodily sensations, and posture without trying to “empty your mind.”
During these minutes, the prefrontal cortex and anterior cingulate reorganize, reducing cortisol and restoring focus and clarity. Unlike generic “take a break” advice, this method explains how and why it works, making the learning immediate and practical. Studies show that conscious micro-pauses are more effective than long passive breaks, allowing you to apply the reset multiple times a day to improve productivity and well-being.

Leonardo da Vinci was not just a painter and inventor; he also created some of the first robots in history. Among his inventions, a mechanical knight stood out — it could sit, move its arms, lift the helmet visor, and even beat its chest.
Leonardo’s Automata: Designed with gears, pulleys, and cords, they anticipated modern robotics concepts.
Surprising Movements: The knight could perform realistic human gestures, showing Leonardo’s deep understanding of anatomy and mechanics.
Practical Use: Some automata were studies for theater or military demonstrations, but also served as advanced engineering experiments.
Legacy: These robots were precursors to automated machines, influencing industrial robotics and modern androids centuries later.
Curiosity: Leonardo imagined a technological future that would only materialize over 400 years later, proving human creativity has always been ahead of its time.
These inventions show that the idea of machines imitating humans didn’t start in the digital age — it began during the Renaissance with mechanical gadgets that were true analog robots.

The Secret Agent follows Marcelo, a university professor and technology specialist who returns to his hometown. His return draws the attention of forces connected to political and economic power, placing him under constant surveillance. Faced with growing threats, he struggles to protect his son, preserve emotional bonds, and survive in an environment dominated by fear and silence.
Main Themes
Authoritarianism and repression
Surveillance and control
Collective memory
Political trauma
Resistance and solidarity
Narrative
The story unfolds in urban spaces marked by memory and tension. Marcelo finds support among marginalized and dissident characters, forming a silent network of protection and resistance.
Style and Atmosphere
Dark and claustrophobic cinematography
Detailed production design
A constant sense of suspense and paranoia
Importance
More than a period piece, The Secret Agent is a timeless work that reflects on the effects of political violence, the fragility of freedom, and the need to preserve memory under oppressive regimes.

The custom of saying “cheers” while clinking glasses and drinks is an ancient tradition that blends history, superstition, and social symbolism. This gesture is common at celebrations such as weddings, birthdays, and important achievements.
Origin of clinking glasses
The habit originated in medieval Europe, when people believed that the sound of glasses helped to:
Ward off evil spirits
Demonstrate trust among participants
Prevent poisoning, since the liquid could slightly mix
Meaning of the sound of glasses
The sound of the toast plays a symbolic role:
Marks the beginning of the celebration
Represents unity and harmony
Replaces ancient religious or protective rituals
Why do we toast while looking into each other’s eyes?
In many cultures, a proper toast involves:
Looking into the other person’s eyes
Not crossing arms or glasses
This symbolizes respect, sincerity, and good intentions.
“Cheers” in modern times
Today, clinking glasses is mainly a gesture of:
Celebration
Friendship
Social connection
Even without its original meaning, the custom remains as a cultural ritual passed down through generations.

The beaches of Rio de Janeiro are world-famous for their beauty, white sand, and vibrant sea. Among the attractions, swimming and water sports are very popular, but it is essential to understand the risks of rip currents.
What is a rip current and how it forms
A rip current is a strong movement of water that occurs when powerful waves from the open ocean meet the coast. This creates fast currents, high waves, and intense water movement, which can pull swimmers out to sea. Rip currents are more common on days with strong winds or ocean storms.
How to avoid accidents in rip currents
Observe the beach flag: red indicates danger.
Avoid swimming alone or in areas without lifeguards.
Stay close to the shoreline if swimming is not safe.
Pay attention to lifeguard instructions and signage.
What to do if caught in a rip current
Do not swim against the current: it is much stronger than human effort.
Swim parallel to the shore until out of the current.
Raise your arms and call for help while staying calm.
If you get tired, float on your back until you regain strength.

The Pico Paraná, at 1,877 meters, is the highest point in southern Brazil and is located in the Serra do Mar, between the municipalities of Antonina and Campina Grande do Sul, in Paraná. Its geological formation dates back to the Precambrian period, millions of years ago, when tectonic uplift and erosion processes formed its igneous and granitic rocks. The name “Paraná” comes from the Tupi language and means “similar to a sea”, referencing the wide rivers and the vast vegetation surrounding the region.
Why the trail can be dangerous
Rugged terrain: loose rocks and steep sections increase the risk of slipping.
Rapid weather changes: fog, rain, or strong winds can make the climb difficult.
Lack of physical preparation: the long route requires endurance and good physical condition.
Limited signage: without a guide or an updated map, it’s easy to get lost.
How to prevent accidents:
Hire an experienced guide: safety and knowledge of the terrain.
Use proper equipment: trekking boots, poles, and waterproof clothing.
Plan your ascent: bring water, food, and a first aid kit.
Check the weather forecast: avoid climbs in rain or fog.
Respect your limits: taking breaks helps prevent fatigue and accidents.

Salting is an ancient technique used to preserve meat and fish before refrigeration. Salt reduces the moisture in food, preventing the growth of bacteria.
How it works:
Salt acts through osmosis, drawing water out of the food’s tissues and creating an environment that is hostile to microorganisms.
Historical origin:
Used by Egyptians, Romans, and Asian civilizations, salting was essential for long journeys, wars, and times of scarcity. Salt was once so valuable that it was comparable to gold.
Famous examples:
Salted cod (Portugal)
Charque and dried beef (Brazil)
Salted anchovies (Italy)
Traditional recipe – Simple dried beef
Ingredients:
1 kg beef (round or similar cut)
Coarse salt
Preparation method:
Cut the meat into thick strips and completely cover with coarse salt. Place in a container, cover, and let rest for 24 hours in the refrigerator.
Drain the liquid and hang or place in a well-ventilated area for 2 to 3 days to dry.
Before consuming, soak in water for a few hours to remove excess salt.

The fish escabeche is an ancient dish, known for its bold flavor and excellent food preservation. Very popular in Portugal, Spain, and Brazil, it has crossed centuries and cultures.
History and Origin
The word escabeche comes from the Arabic al-sikbaj, a method of preserving meat and fish using vinegar and spices. This technique spread across the Iberian Peninsula during the Arab occupation and was later brought to the Americas by Portuguese and Spanish colonizers.
Before refrigeration, escabeche was essential for preserving fish for longer periods while maintaining flavor and food safety.
Escabeche in Brazil
In Brazil, escabeche gained regional adaptations and is commonly made with sardines, hake, or mackerel. It is usually served cold or at room temperature, making it ideal for hot days.
Traditional Fish Escabeche Recipe
Ingredients:
1 kg fish steaks
2 onions, sliced
3 cloves of garlic
1/2 cup vinegar
1/2 cup olive oil
1 sliced tomato
Salt, pepper, and bay leaf to taste
Preparation method:
Season the fish with salt and pepper, lightly fry, and set aside. Sauté the onions, garlic, and tomato in olive oil, add the vinegar and bay leaf. Assemble in layers with the fish and let it rest. Serve after cooling.

United States’ Interest in Venezuela: Understanding the Reasons
The United States’ interest in Venezuela is longstanding and linked to strategic, economic, and geopolitical factors that remain relevant over time.
Oil and natural resources
Venezuela holds one of the largest oil reserves in the world. Historically, the U.S. has sought to secure reliable access to strategic energy sources, reducing the risks of external dependence.
Regional stability and security
Political and economic instability in Venezuela affects all of Latin America, generating migration crises and regional tensions. For the U.S., stability in the Western Hemisphere is essential to its own security.
Geopolitical influence
Venezuela’s ties with countries such as Russia, China, and Iran draw U.S. attention, as Washington traditionally aims to limit the influence of rival powers in the region.
Democracy and human rights
U.S. discourse emphasizes the defense of democracy, free elections, and human rights, frequently citing Venezuela’s political situation as a source of concern.
Economy and trade
Before the crisis, Venezuela was a relevant trading partner. A stable environment could reopen opportunities for economic cooperation and investment.

January 2 is the day of Saint Basil the Great and Saint Gregory of Nazianzus, two of the greatest thinkers of 4th-century Christianity and central figures of the early Church. Close friends and bishops, they became known as the Cappadocian Fathers due to their work in the region of Cappadocia, in present-day Turkey.
Saint Basil the Great(330–379)
Basil was the Bishop of Caesarea and stood out for defending the Christian faith against heresies, especially Arianism. He is considered one of the founders of Christian monasticism, establishing rules that still influence monastic life today. He was also a strong advocate for the poor, founding hospitals and charitable institutions known as the Basiliads.
Saint Gregory of Nazianzus(329–390)
Gregory was one of the greatest theologians of the Church and earned the title “The Theologian” for his intellectual depth. He served as Archbishop of Constantinople and played a decisive role in shaping the doctrine of the Holy Trinity, being especially influential at the Council of Constantinople (381).
Shared Legacy
Together, Basil and Gregory helped consolidate Christian theology by uniting faith, reason, and social action. Their writings remain a cornerstone for Catholic and Orthodox traditions, shaping Christian spirituality for more than 1,600 years.

Vila Nova de Paiva is a popular destination for lovers of traditional Portuguese cuisine, with a special focus on dishes that showcase game meat and fish from its rivers. The local cuisine combines local ingredients with ancient knowledge, resulting in unique flavours that reflect the region's cultural identity.
Among the most emblematic dishes is rabbit stewed with carqueja, an aromatic herb typical of the Beira mountains, which gives the meat a special aroma. Wild boar and stewed lamb also have a place of honour on local tables, highlighting the municipality's strong hunting tradition.
As for fish, trout with escabeche sauce, sourced from the cold, clear waters of the Paiva River, is a delicacy of choice. The goat stew, rich in flavours and tradition, completes the main course offering, revealing the pastoral influence of the parishes in the municipality.
The parish of Pendilhe is renowned for its artisanal production of smoked meats, such as salpicão, appreciated for its texture and intense flavour. This authentic and deep-rooted cuisine promises a true sensory journey through the soul of the Terras do Demo.

Magusto is a festival between October and November, associated with dates such as Saint Simon's Day, All Saints' Day and Saint Martin's Day. It is celebrated around bonfires, roasting chestnuts with jeropiga, açaí or new wine. The brave jump over the bonfire, and "filling" it with ashes is part of the tradition. Despite the rain in autumn, "Saint Martin's summer" brings sunshine. The legend of Saint Martin, related to a rainy day, explains this phenomenon. A specific tradition, the "Magusto da Velha", takes place in Aldeia de Viçosa on December 26, honoring a rich old woman with the throwing of chestnuts from the bell tower and prayers. The event in Barqueiros, Mesão Frio, connects magusto to ancient rituals in honor of the dead.

The Straw Hat Pirates, the group of pirates led by Luffy, got their name from the straw hat Luffy always wears. Each group member has a personal goal on their journey. The world of One Piece is inhabited by a wide variety of characters, including humans, sea creatures, anthropomorphic animals, and even giants.

Transition metal complex compounds have been attracting attention in the field of chemistry due to their varied structures and intense colors. These materials are formed when a transition metal binds to different molecules or ions called ligands, creating geometric arrangements such as octahedral, tetrahedral, or square-planar shapes. Each type of geometry directly influences the chemical behavior of the complex.
One of the most fascinating aspects is the origin of their colors, which arises from electron transitions between different energy levels present in the metal's orbitals. When light strikes the complex, part of it is absorbed and part is reflected; the perceived color depends precisely on this energy difference between orbitals, which varies according to the metal and the ligands involved.
Besides their visual appeal, these compounds play an important role in various practical areas. They can act in catalytic processes, in materials used for sensors, and in systems that rely on specific optical properties. Understanding their structure and characteristics is essential for developing more efficient applications and expanding the use of these materials in everyday scientific and technological contexts.

The clash between Flamengo and Palmeiras has become one of the most compelling matchups in recent Libertadores history. Flamengo brings its explosive attack, star-studded squad, and a fan base that treats every decisive match as destiny. Palmeiras counters with tactical discipline, competitive consistency, and the experience earned from deep tournament runs. The final in Lima adds another layer of intrigue. It was there that Flamengo lived one of its most iconic nights, and returning to this stage revives emotions and expectations. For Palmeiras, winning in such a symbolic setting offers the chance to write a new chapter for a club accustomed to big finals. More than just a game, Flamengo vs Palmeiras has come to represent a golden era of the Libertadores: two giants, two contrasting identities, and a trophy that constantly passes through them. Every meeting feels like a portrait of Brazilian football at its highest level.