Oysters can change their sex from male to female. They can do this countless times.
In the Middle Ages, all believed as did Aristotle, that the heart is the center of intelligence.
More people are using blue toothbrushes rather than the red ones.
Only 25 cm of water is sufficient to move heavy objects, even cars.
In 1898 Nikola Tesla successfully demonstrated a “ship with a remote control” as a continuation of the research on radio frequency.
If a book of average size would contain all of the insect’s names, it would have about 6.000 pages, as our planet has more than 900.000 known species.
