What are some of the most interesting scientific facts known to you?

 1. Honey never spoils; archaeologists have found pots of honey in ancient Egyptian tombs that are over 3,000 years old and still perfectly edible.

2. The Earth's core is hotter than the surface of the sun.

3. Cows have best friends and can become stressed when they are separated.

4. Octopuses have three hearts: two pump blood to the gills, and one pumps it to the rest of the body.

5. The fingerprints of koala bears are so indistinguishable from humans that they have occasionally been confused at crime scenes.

6. A day on Venus is longer than a year on Venus. It takes about 243 Earth days for Venus to complete one rotation on its axis, but only about 225 Earth days to orbit the Sun.

7. The blue whale's heart is so large that a human could swim through its arteries.

8. Honeybees can recognize human faces.

9. Bananas are berries, but strawberries aren't.

10. The Eiffel Tower can be 15 cm taller during the summer due to the expansion of the iron when it's hot.

11. A teaspoonful of neutron star material would weigh about 6 billion tons on Earth.

12. Humans and giraffes have the same number of neck vertebrae—seven.

13. There are more possible iterations of a game of chess than there are atoms in the observable universe.

14. The Great Wall of China is not visible from the Moon without aid, contrary to popular belief.

15. Your taste buds have a lifespan of about 10 to 14 days, and new ones are constantly being formed.