1. Water Can Boil and Freeze at the Same Time
It’s called the triple point of water, where the temperature and pressure allow water to exist in all three states—gas, liquid, and solid—simultaneously. This can happen under specific conditions, such as in a vacuum or controlled laboratory environment.
2. Bananas Are Berries, But Strawberries Aren’t
In botanical terms, a berry is a fruit that develops from a single flower with one ovary, and bananas fit that definition. Strawberries, however, come from a flower with multiple ovaries, so they aren’t technically berries.
3. There’s a Species of Jellyfish That Is Immortal
The Turritopsis dohrnii, also known as the “immortal jellyfish,” can revert its cells back to their earliest form after reaching maturity, effectively reversing its aging process. It can repeat this cycle indefinitely, making it biologically immortal.
4. Honey Never Spoils
Archaeologists have discovered pots of honey in ancient Egyptian tombs that are over 3,000 years old and still perfectly edible. Honey’s long shelf life is due to its low moisture content and natural acidity, which make it inhospitable to bacteria and microorganisms.
5. The Eiffel Tower Can Grow Taller in Summer
The Eiffel Tower can grow by about 6 inches (15 cm) during the summer because of the expansion of the iron in the heat. This phenomenon is known as thermal expansion, where materials expand as they get hotter.
6. Octopuses Have Three Hearts
An octopus has two hearts that pump blood to the gills, and one that pumps it to the rest of the body. Interestingly, when an octopus swims, the heart that delivers blood to the body stops beating, which is why they prefer crawling over swimming as it tires them out less.
7. Cows Have Best Friends
Research has shown that cows are social animals and form strong bonds with other cows. When separated from their best friends, cows experience stress and anxiety, showing a clear preference for being with familiar companions.
8. Antarctica Is the Driest Place on Earth
While we often associate deserts with heat, Antarctica is technically the driest place on Earth. Some areas receive less than 2 inches (5 cm) of precipitation per year. Its frigid conditions and lack of moisture make it more arid than the Sahara Desert.
9. There’s a “Jellyfish Lake” in the Philippines
In Jellyfish Lake (located on Eil Malk Island in Palau), visitors can swim with millions of harmless golden jellyfish that have evolved to lose their sting. The jellyfish thrive in the lake due to a lack of predators and an abundance of sunlight, which promotes their growth.
10. Venus Has More Volcanoes Than Any Other Planet in the Solar System
The planet Venus has over 1,600 volcanoes scattered across its surface. Despite the fact that volcanic activity on Venus is not currently observed, scientists believe the planet’s volcanic history could have played a role in its extreme surface conditions.
11. Sharks Have Been Around Longer Than Trees
Sharks have existed for around 400 million years, while the first trees appeared about 350 million years ago. This makes sharks older than many of the planet’s plant life, including the towering trees we see today.
12. Wombat Poop Is Cube-Shaped
Wombats, native to Australia, produce poop that is cube-shaped. This peculiar shape prevents the poop from rolling away and helps mark their territory more effectively. Their intestines are incredibly long, which helps form the cubes.
13. The Great Wall of China Is Not Visible From Space
Contrary to popular belief, the Great Wall of China is not visible from space with the naked eye. While the wall is long, it is relatively narrow and closely matches the color of the surrounding terrain, making it difficult to distinguish from orbit without aid.
14. A Day on Venus Is Longer Than a Year on Venus
A day on Venus (the time it takes for the planet to complete one full rotation on its axis) is longer than its year (the time it takes for Venus to orbit the Sun). A day lasts about 243 Earth days, while a year lasts around 225 Earth days.
15. The Moon Has Moonquakes
The Moon experiences its own version of earthquakes, known as moonquakes. These quakes are caused by tidal forces from Earth, and some can be strong enough to register on seismographs. In fact, the moonquakes detected by NASA's Apollo missions were sometimes strong enough to damaged.
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