Science And Other AmazingStuff

Discovering the wonders of science since 1997. I beg your pardon for any grammatical mistakes i make, since English is not my first language.

About phobias: why some of them are so irrational

We humans are complex creatures. We are incredibly intelligent in some aspects, but we also let irrational fears take control of us sometimes. Instinct can be very strong and very hard to repress, and all of this is what create our phobias! They don’t have to be rational, they don’t have to be real, but one thing is sure: they ceirtainly exist!


Does this image upset you? I’m afraid you have trypophobia!


There is a strictly biological component to phobias. A quick look at how the brain works when phobic people are triggered suggests the problem. When worrisome stimuli get into the brain, there are two ways they can go; to the amygdala and to the sensory cortex. The sensory cortex is a calm, rational part of the brain. It casts around the rest of the brain for more information and looks at general knowledge, present context, and past experience before it reacts.

The amygdala, on the other hand, is the part of the brain that gets an unpleasant stimulus and screams, “What are you doing? Run, stupid!” When people say that phobias aren’t rational, they’re right. The amygdala is not there to be rational. It’s there to get results. And it does, often in the form of a panic attack.


      Sensory cortex: oh, it’s just a little snail, just take it to the garden

      Amygdala: oh god, oh god, run for your life!!!!!


As a little story, I have always had a feeling of dizziness  when looking up at the sky, specially at starry nights, provoked  by the fear (an incredibly irrational one) of falling into the sky, like if gravity stopped existing suddenly. It has never been too bad, it just makes me feel a bit overwhelmed. But, the thing is, while writing this article i have found that what I suffer is actually a phobia called casadastraphobia, and as incredible as it sounds there are actually people who can’t even get out of their house because of this!


To end up this post, I want you, dear reader, to tell me in the comments if you have any type of phobia and, if so, to describe it to me. Bye!!

About alien life forms: A thought on Fermi’s paradox

Are we really alone in the universe, or is there anything out there?

We all have asked ourselves this question at least once in our lifetime. It just takes a starry night and a clear sky to start thinking about our existence.


I mean, look at this image and dare to tell me we are alone in the universe.


We humans have been living in this tiny planet called Earth for an even tinier amount of time. Don’t you believe me?? Take a look at these pictures.




The first one is a timeline of human existence throughout Earth’s history. The first homo sapiens appeared 200,000 years ago, whic may seem a lot of time comparing it, for example, to the average human life expectancy (80 years approximately). But now, compare that to the first appearance of simple animals, 600 million years ago. And that to the first appearance of simple cells, 3.8 BILLION years ago. Crazy, huh?

The second one is a comparison between the Earth’s size and the size of other planets and stars. Knowing that we can only see a part of the universe (the observable universe) and that we haven’t discovered more than 1% of it (no, I don’t know the exact number) we can assume that there are planets out there quite bigger than our Earth is.

So all of these things would make us think that there have to be any other life forms than the Earth ones. Right?

Well, nobody knows for sure, but there are things that indicate there could actually not be any form of life outside our planet. One of them is the Fermi paradox.

The Fermi paradox (or Fermi’s paradox) is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial life civilizations and the lack of contact with, or evidence for, such civilizations. The basic points of the argument, made by physicists Enrico Fermi and Michael H. Hart, are:

  • The Sun is a typical star, and there are billions of stars in the galaxy that are billions of years older.
  • With high probability, some of these stars will have Earth-like planets, and if the earth is typical, some might develop intelligent life.
  • Some of these civilizations might develop interstellar travel, a step the Earth is investigating now.

Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in about a million years.

According to this line of thinking, the Earth should already have been visited by extraterrestrial aliens though Fermi saw no convincing evidence of this, nor any signs of alien intelligence anywhere in the observable universe, leading him to ask, “Where is everybody?


Well, to end the post I want you to let me know in the comments if you think there is some kind of life in other planets. I personally think there has to be something, but I want to know your opinions on this. Bye!


Hoaxes: Can mermaids really exist, or is it just a myth?

Haven’t you wondered sometimes, in one of those boring days with nothing to do: ¿Are mermaids scientifically possible? If you don’t trust The History Channel or Discovery Channel’s explanation about the case (I don’t blame you) let’s see if they could exist!


I want you to be mentally prepared: start forgetting about this kind of mermaids.


Well, first of all, the topic doesn’t seem so crazy, right? After all, couldn’t mermaids just be humans evolved to live underwater?

This is the kind of questions we should make ourselves each time we stumble across these type of information. We’ve got to be open minded about this.

Let’s start talking about evolution.

As you all probably know, evolution is change in heritable traits of biological populations over successive generations. Animals born with certain little mutations have an advantage over the other animals, and therefore, higher possibilities of surviving and having descendants.

Then, the first thing we’ve got to ask ourselves is: If mermaids were a species that separated itself from anthropoids long time ago to live in an acuatic environment, would they be well prepared to survive underwater?

If we take a look at a mermaid tail we see that, because of the movement limitation that human waists carry (which mermaids seem to possess) the movement of their fins could only be vertical, as happens with other underwater mammals such as dolphins or whales.

But the thing is, the lower part of underwater mammals’ skeleton is nothing like the human one. Observing a dolphin skeleton we can see that its tail is in fact a prolongation of its spinal cord.



As mermaids usually appear deppicted on a rock, with their tails bended, it seems that their skeletons do have some kind of internal articulation. This makes us think that their evolution would have consisted in the fusion of both human legs into one.

This means that after all, one mermaid would be like, at least from the mechanic point of view, one regular human with diving fins. And this would put them in real danger, making them far slower than their possible predators, such as sharks or killer whales.

Letting natation aside, let’s analize another factor: their ability to adapt to underwater life.

As you know when two objects are in contact and at a different temperature, the heat contained by the warmer one is transmitted into the colder one until they both reach the same temperature.



We humans are not an exception. Even right know, sitting comfortably in our sofa, our heat is being constantly transmitted into the air surrounding us, coulder than us. If it weren’t for our bodies’ ability to compensate this loss by generating more heat, our bodies’ heat would get lost in the air until we were at room temperature, meaning our dead.

But, in the sea, mermaids would have it harder than we do, as water absorves heat much more quickly than air. And if the water surrounding them moves (because of waves, for example) it would make them lose heat even quicker.

This heat loss thing is why nature has given marine mammals two ways of conserving heat: giving them thin skin and body fat (seals and walruses, for example) or giving them very thick fur (as in otters and beavers), but mermaids, as similar as they seem to us, have neither one nor the other.

They could always be cold blooded, as fishes are, but transforming from warm blooded to cold blooded is a process that would take millions of years, and since the first homo sapiens appeared 200,000 years ago, that doesn’t seem the case.

So there would only be one way to create mermaids, if you know what I mean…


Well, jokes aside, mermaids are not possible from a scientific point of view, and they are and will always be just a myth.

At least, that’s my opinion about them. Maybe they come from, you know, magic and stuff…



By the way, if you liked this post, give it a like, subscribe to my website and I will keep posting interesting things like this. Bye!

Fresh Start!

Hi there, ladies, gentlemen and others(yes, aliens are welcomed too).

I have decided to start a blog on my own where I will write about things that captivate me, such as science in general, literature, tv shows or other stuff. I will also probably post photos, drawings of mine and everything that I find worth posting.

I know the website format is not the best, and I also know that it is so difficult to be read nowadays, with all the blogs that exist in the internet, but I hope someone will find me and like what I post.

By the way, English is not my first language, so I apologize for any mistakes I could make.

With everything said already, “Allons-y”

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