10 More Weird Facts You Can't Unlearn

1. There’s a species of ant that “explodes” to protect its colony.
Some ants rupture their own bodies to release sticky, toxic fluid on enemies.

2. A day on Mercury is longer than a year on Mercury.
It rotates so slowly that one full spin takes more time than one orbit around the Sun.

3. Some cats are allergic to humans.
Rare, but possible — usually a reaction to skin flakes or products we use.

4. You’re always seeing your nose — your brain just deletes it.
It’s there in your field of view, but filtered out as “irrelevant”.

5. A blue whale’s heartbeat can be heard from more than 3 km away.
Their hearts are enormous — roughly the size of a small car.

6. There’s a place in the ocean where you’re closer to space than to the seafloor.
In very deep areas, the surface is actually closer than the bottom.

7. Most people have a favorite side of their face for selfies.
We unconsciously pick the angle we think looks “most like us”.

8. The Eiffel Tower can be 15 cm taller in summer.
Metal expands with heat, so the whole structure slightly grows.

9. There are more possible ways to shuffle a deck of cards than atoms on Earth.
It’s extremely unlikely any shuffle in history has perfectly repeated another.

10. Your tongue print is as unique as your fingerprint.
But you probably shouldn’t start using it for ID.