Did you know?

26 August 2026

1. 01

   An octopus has about 500 million neurons, but two-thirds of them are spread through its eight arms rather than its brain.

2. 02

   Light travels at about 300,000 kilometers per second, fast enough to circle the Earth about seven times in a single second.

3. 03

   An adult human skeleton has 206 bones, but a newborn baby has about 300, many of which fuse together during growth.

4. 04

   Oceans cover about 71 percent of Earth's surface, leaving only 29 percent as land.

5. 05

   A group of flamingos is called a "flamboyance," one of the more colorful names in the animal kingdom.

6. 06

   The Sahara Desert covers about 9.2 million square kilometers, making it the largest hot desert on Earth.

7. 07

   Most natural diamonds form under extreme pressure and heat around 150 to 200 kilometers below Earth's surface.

8. 08

   The human brain makes up about 2 percent of body weight but consumes roughly 20 percent of the body's energy.

9. 09

   Humans share about 60 percent of their DNA with bananas, a reminder of how deep the tree of life's shared ancestry runs.

10. 10

    A day on Mars, called a "sol," lasts about 24 hours and 37 minutes, only slightly longer than a day on Earth.

11. 11

    Despite being covered in ice, Antarctica is technically the driest continent on Earth, receiving less precipitation than most deserts.

12. 12

    Saturn's moon Titan has lakes and rivers of liquid methane on its surface, the only place besides Earth known to have stable liquid.

13. 13

    Octopus blood is blue, not red, because it uses a copper-based protein called hemocyanin instead of iron-based hemoglobin to carry oxygen.

14. 14

    Weight for weight, spider silk is stronger than steel, and some types are tougher than Kevlar used in bulletproof vests.

15. 15

    The Pacific Ocean alone is larger than all of Earth's landmasses combined, covering more than 165 million square kilometers.

16. 16

    Sound travels through air at about 343 meters per second at room temperature, far slower than light.

17. 17

    The human skeleton completely replaces itself roughly every 10 years through a continuous process of bone remodeling.

18. 18

    Honeybees perform a "waggle dance" inside the hive to tell other bees the exact direction and distance of a food source.

19. 19

    The Great Barrier Reef stretches about 2,300 kilometers and is the largest living structure on Earth, visible even from space.

20. 20

    Elephants are the only mammals that cannot jump, because their leg bones and muscles are not built for leaving the ground.

21. 21

    A group of crows is called a "murder," a name that dates back to old English folklore about the birds.

22. 22

    The Mariana Trench, the deepest part of the ocean, plunges to about 11,000 meters below the surface.

23. 23

    The human genome contains roughly 20,000 protein-coding genes, far fewer than scientists once expected.

24. 24

    The Andromeda Galaxy is moving toward the Milky Way, and the two are expected to collide and merge in about 4 to 5 billion years.

25. 25

    Domestic cats sleep for about 12 to 16 hours a day, meaning they spend roughly 70 percent of their lives asleep.

26. 26

    Earth's inner core is estimated to be about 5,200 degrees Celsius, nearly as hot as the surface of the Sun.

27. 27

    Butterflies taste with sensors on their feet, which they use to check whether a leaf is suitable for laying eggs.

28. 28

    Earth spins so fast that a point on the equator moves at about 1,670 kilometers per hour, though we never feel it.

29. 29

    A hummingbird's heart can beat up to 1,260 times a minute during flight, one of the fastest heart rates in the animal kingdom.