25 Facts Proving How Little We Actually Know About the World Around Us

We’ve all been told since childhood that whatever is born on Earth must one day die. But did you know that there is a species of jellyfish that is immortal? There are way more things in the world that we don’t know about than we can imagine. The more we learn, the more we realize how little we know about the world around us.


1. The chances that the glass of water you’re drinking contains a molecule of water that once passed through a dinosaur is about 100%.


2. Reading in poor lighting or using a computer in the dark does not have any negative effects on your vision.

3. There may be no sound in space, but it does have a distinct smell: a bouquet of diesel fumes, gunpowder, and barbecue.

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4. Goats have rectangular pupils.

5. Some turtles can breathe out of their butts.

6. It takes a photon, on average, 200,000 years to travel from the core of the sun to the surface, then just a little over 8 minutes from the sun’s surface to your eyeball.

7. Turritopsis dohrnii is a species of jellyfish that is immortal.

8. The moon is moving away from the earth at a tiny, although measurable, rate every year. 85 million years ago it was orbiting the earth about 35 feet from the planet’s surface.

9. Nutmeg is extremely poisonous if injected intravenously.

10. Lightning strikes the earth 100 times every second.

11. If you sneeze too hard you can fracture a rib. If you try to suppress a sneeze you can rupture a blood vessel in your head or neck and die. If you keep your eyes open by force they can pop out.

12. Rats multiply so quickly that in 18 months, 2 rats could have over a million descendants.

13. A category 3 hurricane releases more energy in 10 minutes that all the world’s nuclear weapons combined.

14. A banana is actually a berry. A strawberry isn’t.

15. Most diamonds in the world are at least 3 billion years old.

16. Some cats are allergic to humans.

17. One dialect of a world language dies every 14 days.

18. You’ve heard the expression, “sweating like a pig” but it turns out that pigs don’t even sweat!

19. Frowning burns more calories than smiling.

20. The eyes of an ostrich are bigger than its brain.

21. The iconic Eiffel Tower grows 15 cm taller during the summer.

22. Nepal is the only country with a flag that isn’t rectangular or square shaped.

23. Low-frequency sound waves emitted by whales can travel more than 10,000 miles in the water.

24. Giraffes survive on very little sleep. Anywhere from 10 minutes to 2 hours is enough for them.

25. Mount Everest grows roughly 4 millimeters every year.