THE CRA PERSPECTIVE Ancient Engineering Wonders That Still Challenge Our Imagination From underground cities and precision-cut stone to monumental temples and sophisticated water systems, the ancient world was far more technologically capable than we sometimes imagine. Some of humanity's greatest engineering achievements were built long before modern machines, computers and industrial technology. Across continents, ancient civilizations transformed stone, mountains, water and landscapes into extraordinary structures. Their achievements reveal not only physical strength, but also planning, mathematics, craftsmanship, environmental awareness and generations of accumulated knowledge. These monuments invite us to ask an intriguing question: How did ancient societies accomplish eng...
๐ National Smile Day – 31st May (US)
Every year on 31st May, the United States celebrates National Smile Day — a day dedicated to the simple, powerful act of smiling. The day encourages people to smile more often, spread kindness, and recognize the positive impact a smile can have on others.
The origins of this unofficial holiday are unclear (likely a social media or happiness campaign from the 2010s). But the science is clear: smiling reduces stress, improves mood, and is contagious. So today, share a smile with everyone you meet.
๐ Why Smile?
- ๐ Reduces stress — Smiling releases endorphins, natural feel‑good chemicals.
- ❤️ Lowers blood pressure — Even fake smiles help.
- ๐ Boosts immune system — Relaxation from smiling improves immunity.
- ๐ค Builds trust — Smiling people appear more approachable and trustworthy.
- ๐ Contagious — Smiles activate mirror neurons in others.
๐ The Psychology of Smiling
- ๐ง Facial feedback hypothesis — Smiling (even fake) can make you feel happier.
- ๐ถ Babies smile from birth — Reflex smiles appear first, genuine social smiles by 2 months.
- ๐ Universal expression — Smiling is recognized across all cultures.
๐ How to Celebrate National Smile Day
- ๐ Smile at strangers — You might make their day.
- ๐ธ Take a smiling selfie — Share with #NationalSmileDay.
- ๐ค Do a random act of kindness — Makes you and others smile.
- ๐ Watch a comedy — Laughter makes you smile.
- ๐ช Send a smiling photo to family — Spread joy remotely.
๐ง Smile Facts
- ๐ง Children smile 400+ times/day — Adults only ~20 times.
- ๐ช Smiling uses fewer muscles — 17 muscles smile vs. 43 frown.
- ๐ฆท Most attractive feature — Surveys show a nice smile is the most attractive physical trait.
๐จ Art & Smiles
The most famous smile in art: Mona Lisa by Leonardo da Vinci. Photography (smiling portraits) and pop art (big smiley faces) celebrate the power of a smile. The classic yellow smiley face (☺) was created in 1963 by Harvey Ball.
๐ Smiles Around the World
- ๐บ๐ธ USA — Smiling in public is common and expected.
- ๐ฏ๐ต Japan — Smiling in professional contexts is complex; sometimes hides emotions.
- ๐ซ๐ท France — Smiling with strangers less common, but not unfriendly.
- ๐ Universal — No matter the culture, a genuine smile is understood.
๐งญ A Simple Message
On this 31st May, smile. It costs nothing but means everything. A smile can change a stranger's day, comfort a friend, or lighten your own mood. So go ahead — flash those teeth. Wrinkle those eyes. And watch the world smile back.
๐ Smile — it's the universal language of kindness. ๐
๐ฟ Read more ๐ CRA Arts Blog
๐จ Shutterstock: craarts
▶️ YouTube: CRA Arts Channel
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