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Curiosity fuels learning, and each week brings a fresh batch of fascinating “Did You Know?” facts.
From cosmic wonders to everyday curiosities, here are 10 intriguing discoveries guaranteed to spark conversation and insight.
Weekly Did‑You‑Know Facts
- Science & Nature
Did you know? Octopuses have three hearts and blue blood. Two hearts pump blood through their gills, while the third circulates it throughout their bodies. - Science & Nature
Did you know? The deepest known part of the ocean, the Mariana Trench, is more than 36,000 feet deep—deeper than Mount Everest is tall. - History & Politics
Did you know? On July 5, 1687, Sir Isaac Newton published Principia, laying the foundation for classical mechanics and revolutionizing physics. - History & Politics
Did you know? July 5 is Independence Day in Venezuela (celebrated since 1811), marking the signing of their first Declaration of Independence from Spain. - Space & Astronomy
Did you know? A day on Venus lasts longer than a year there—it completes one rotation in 243 Earth days but orbits the Sun in just 225 days. - Human Body & Psychology
Did you know? You have more bacterial cells in your body than human cells—microbes influence digestion, immunity, and even mood. - Inventions & Technology
Did you know? The first digital camera was invented in 1975 by Kodak engineer Steve Sasson—producing a black-and-white image in 23 seconds stored on a cassette tape. - Pop Culture or Everyday Objects
Did you know? Bubble wrap was originally created in 1957 as textured wallpaper—it later found a better purpose in packaging protection. - Science & Nature
Did you know? Bananas are technically berries, while strawberries aren’t—due to differences in seed placement and plant structure. - Inventions & Technology
Did you know? The earliest known vending machine dates to the 1st century AD, invented by Hero of Alexandria to dispense holy water in Egyptian temples.
Bonus Myth‑Buster
- Myth: Bulls react angrily to the color red.
Truth: Bulls are actually color-blind to red—it’s the movement of the cape that provokes them, not the hue.
Closing
If any of this week’s facts surprised you, share them or explore our archive for even more.
