Why is sore throat a symptom of many common sicknesses?

Imagine that your body is a castle. The germs, bacteria, and viruses are the invaders who wanted to take control of the castle’s food supply, and they are usually eliminated by your trained soldiers, which are supposed to be the white blood cells. As an added layer of protection, the castle has … Read more

How do chicken eggs not crack inside their body?

This is a fascinating question that can come up in any human mind. Considering the fact that an egg is enclosed in a shell that is easily broken by us, how can it not break inside the hen? What is the mystery behind this phenomenon and why do we not see this … Read more

How did sexual reproduction first develop in animals?

It is difficult to say how it first came about, but some key factors can be used to determine. First, the main difference between sexual and asexual reproduction is that sexual reproduction “reorganizes” the parent DNA into a new pattern, while asexual is essentially the parent self-cloning. By being able to reorganize … Read more

Does the human body really have a 24-hour body clock?

There is a time for everything. For each activity every day, we know when is the right time to do it.  The right timing always matters. The concept of time started since early humans first noticed the regular movement of the Sun and the stars. Some 30 000 years ago, prehistoric people … Read more