Simple questions still make science

In your life, have you ever wondered 'why do giraffes have a long neck?', 'Why do we dream?' . simple, seemingly impromptu questions that have long been a headache scientists.

Let's review some questions that everyone knows - but no one can explain below.

1. What is a dream?

We all dream, it seems to be a natural activity of the brain while we sleep. However, if you ask what dreams really are and why we dream every time we sleep - sadly, science still has not explained it thoroughly.

Some argue that these are just random images due to the rest of the brain. But some others believe, that's what we don't want to think about during the day as a sexual problem .

Anyway, the debate has not yet ended and the definition of dream is still a mystery.

2. Why are we startled in dreams?

Have you ever been drowsy and have a feeling of falling and startled awake? This feeling is the same as when you tilt the chair so much that you feel you are falling. Science currently has no explanation that really satisfies this feeling.

According to some theories, this may be a mechanism that helps you to sleep on tree branches or high soil without fear of falling. But it sounds unreasonable because people almost never sleep on trees. Some other theories suggest that it is a mechanism that slows the process of making us fall asleep.

3. How can the brain store memories?

We do not understand how the parts of the brain are involved in the storage and regeneration of memories, although we know many areas of the brain that are involved in this process.

We are only certain that there is a connection between neurons. When you see an object reminiscent, many parts of the brain will interact with each other to make us remember. The rest - still unknown.

4. Why are cats so grumpy?

We know cats often grumble when they feel happy, but the problem is how can they sound like that?

Although a lot of research has been done, the theory is that cats do it by vibrating the larynx but there is no evidence of anatomical evidence to prove this.

5. Why do giraffes have a long neck?

Many scientists believe that giraffes' long necks help them survive and have many advantages over short-necked species. But that is not really true.

Longer necks do not benefit them apart from being able to eat the leaves above. Some studies suggest that heavy, long necks also make it difficult for them to mate. So why do giraffes have a long neck? It is still a question that hurts the scientific world.

6. How do birds migrate?

We know that birds migrate hundreds of kilometers to spawn or escape the harsh winter. But what we don't know is how they do it?

A typical example: Cuckoo migrates and lays eggs in other bird nests, then flies away and builds its own nest. When young birds grow up, they somehow find out exactly where their ancestors once lived without any help.

Scientists believe that birds can use special biological compasses, but the compass only helps to orientate rather than help find an accurate position.

7. What constitutes gravity?

More than 350 years ago, Newton studied gravity. But what is the nature of gravity has yet to answer. We have understood the nature of 3 of the four fundamental forces of the universe . except for gravity.

It is assumed that it was created by Graviton particles but humanity is probably still far from proving their presence.

8. How exactly does the magnet work?

Magnetism is a strange phenomenon in our universe. But many things about it are still not explained. For example, why can a magnet create a magnetic field strong enough to move objects remotely and when doing that, how can they split into two distinct poles - South - North?

To this day, the nature of the special environment that surrounds the charges or magnets that we still call 'magnetic fields' remains a mystery.

If you have the answers to these questions, please comment below to share with you!