1. Octopuses Have Three Hearts
No, we aren't talking about a love triangle drama from a telenovela. It's a fact! Octopuses have three hearts. Two of them pump blood to the gills, while the other one does the job for the rest of the body. And that's not even the weirdest part – when an octopus swims, the heart that supplies blood to its organs stops beating, which is why these brainy creatures prefer to crawl.
2. Your Belly Button is a Wildlife Park
If you thought the Amazon rainforest was diverse, wait till you hear about your belly button. A study found that the average belly button houses 67 different species of bacteria. So yes, you've been carrying around a mini wildlife park all this time. Bet your pet goldfish is feeling pretty plain now!
3. The Eiffel Tower Can "Grow"
Think buildings can't have growth spurts? Think again! The Eiffel Tower can grow up to six inches during the summer. This is due to thermal expansion - when the iron heats up, it expands, causing the tower to grow. So if you visit the Eiffel Tower in August, make sure to congratulate it on its growth spurt!
4. Bananas Are Berries, but Strawberries Aren't
If you thought you had the whole fruit categorization thing figured out, hold onto your hats. In the botanical world, bananas are considered berries, while strawberries are not. This is because, botanically, a berry has its seeds on the inside, which is true for bananas but not strawberries. Mind blown, right?
5. There's a Planet That Rains Glass - Sideways
Weather forecasts on the exoplanet HD 189733b would be a bit different. With temperatures of over 1000 degrees Celsius and winds that can go up to 7000 kilometers per hour, the rain there is made not of water, but glass – and it rains sideways! Talk about a bad weather day.
Conclusion
From octopuses with three hearts to belly buttons that are bacteria havens, the world is far more bizarre than you might have imagined. And the next time you look at your pet goldfish, remember – it's living in a world where towers can grow, bananas are berries, and glass rain is a thing. If that doesn't inspire it to hit the books, we don't know what will!
