Strange cold knowledge that really exists in world, there will probably be some scientific knowledge that you do not know

01. Ravens have a special hobby, such as pulling other animals' tails.

02.5 Thermometers appeared in 17th century, when thermometers were filled with cognac instead of mercury.

03. Diamond is hardest substance in nature, but not hardest substance in world, because many synthetic substances are much harder than diamond.

04. The Compendium of Materia Medica mentions a variety of purple-red gem called rose.

05. In ancient times, people died from heatstroke, even now.

06. There is an area of ​​the brain in brain that is responsible for motivation and reward. If amount of dopamine released in this area of ​​the brain is increased, people are more likely to be attracted to short-term benefits.

07. Priests in ancient Egyptian period were not allowed to have body hair, even eyebrows and eyelashes had to be removed.

08. Black bears are not necessarily black. Black bears can be brown, yellow, or even white.

09. The sound made by twisting neck or twisting wrist is called knuckle-clicking, which can be understood as joint breathing.

10. During experiment, a genetic analysis of 85 dog breeds was carried out, and, finally, it was found that breed with closest gene to wolf is Shiba Inu.

11. Eating is necessary for every person every day. By counting, it has been established that a person spends an average of 5 years on food in his life.

12. Studies have shown that children who suck on a pacifier are more likely to experience ear pain than those who do not.

13. Roses picked in afternoon can last longer than roses picked in morning.

14. Although dreaming and snoring occur during sleep, they cannot occur at same time.

15. Statistics show that people who enjoy cooking tend to live longer.

16. Hamsters are largest family of mammals, with over 600 species.

17. Any elephant after training can do a handstand on trunk.

18. The tears that people produce when they are sad contain many of harmful substances produced by depressive emotions.

19. The summit of Mount Everest, highest peak in world, is about two table tennis tables.