Here's something that might surprise you: honey never spoils.
Archaeologists have found pots of honey in ancient Egyptian tombs — over 3,000 years old — that are still perfectly edible. Honey's longevity comes from a combination of factors:
- Very low moisture content, which prevents bacteria and microorganisms from surviving in it
- High acidity (low pH), creating an inhospitable environment for microbes
- Hydrogen peroxide produced by an enzyme bees add to the nectar, which has antibacterial properties
As long as it's sealed and kept free of moisture, honey can essentially last forever.
Want another one? Here are a few quick favorites:
- Octopuses have three hearts — two pump blood to the gills, and one pumps it to the rest of the body. The main heart even stops beating when they swim, which is why they prefer crawling.
- Bananas are berries, but strawberries aren't — botanically speaking, a berry must come from a single flower with one ovary, which disqualifies the strawberry.
- There are more possible chess games than atoms in the observable universe — the "Shannon number" estimates around 10^120 possible games, versus roughly 10^80 atoms.
Let me know if you'd like more — I can go deep on any topic you find interesting (space, history, the human body, language, etc.).
Here's something that surprises most people:
Honey never spoils. Archaeologists have found pots of honey in ancient Egyptian tombs—over 3,000 years old—that are still perfectly edible. Honey's chemistry makes it nearly immortal: it's extremely low in moisture and highly acidic, creating an environment where bacteria and microorganisms can't survive. Bees also add an enzyme called glucose oxidase, which produces small amounts of hydrogen peroxide as a natural preservative.
A few other things you might not know:
Octopuses have three hearts and blue blood. Two hearts pump blood to the gills, and one pumps it to the rest of the body—though that main heart actually stops beating when they swim, which is partly why they prefer crawling.
Bananas are radioactive. They contain potassium-40, a naturally radioactive isotope. The dose is tiny and harmless, but it's real enough that scientists half-jokingly use the "Banana Equivalent Dose" to explain radiation exposure.
There are more possible chess games than atoms in the observable universe. The estimated number of unique chess games (the "Shannon number") is around 10¹²⁰, while atoms in the observable universe number around 10⁸⁰.
Wombats produce cube-shaped poop. Their intestines have varying elasticity that molds the feces into cubes, which helps the droppings stay put when used to mark territory without rolling away.
Want me to go deeper on any of these, or tell you
Here's something that might surprise you:
Honey never spoils. Archaeologists have found pots of honey in ancient Egyptian tombs—over 3,000 years old—that are still perfectly edible. Honey's longevity comes from a combination of factors: it's extremely low in moisture and highly acidic, creating an environment where bacteria can't survive. Bees also add an enzyme called glucose oxidase, which produces small amounts of hydrogen peroxide as a natural preservative.
A few other things you might not know:
Bananas are radioactive. They contain potassium-40, a naturally occurring radioactive isotope. The dose is tiny and harmless, but it's real enough that scientists half-jokingly use the "Banana Equivalent Dose" to explain radiation exposure.
Octopuses have three hearts and blue blood. Two hearts pump blood to the gills, while the third circulates it to the body. Their blood is blue because it uses copper-based hemocyanin (instead of iron-based hemoglobin) to carry oxygen.
There are more possible chess games than atoms in the observable universe. The number of unique chess games (the Shannon number) is estimated at around 10¹²⁰, while atoms in the observable universe number roughly 10⁸⁰.
Want me to go deeper on any of these, or share more facts from a particular topic—space, history, biology, language, etc.?