humans and knowledge from the book sapiens

Humans are the deadliest and smartest living organism in the world. Who can define and destroy the earth.

humans stepped on this earth approximately before 25,000 years ago, from an ape called Australopithecus. 

But the first human species evolved from Australopithecus, differ a lot from us (Homo sapiens) in many ways.

it's common for humans to hold many other species among them like other organism. (Like cat holding cheetahs, lions etc.) 

But other human species went extinct by homo sapiens, who only arise before 10,000 years ago.

human beings differ from animals regarding the size of brain. ( Bigger the brain, bigger the knowledge.) humans have bigger brain than animals. 

The accurate reason for the extraordinary development of human brain was still unknown. but still scientist suggest few theories. The revolution of brain holds many reasons starting even from eating cooked food (Eating cooked food reduces the work to intestine which transfers it's energy directly to the brain). 

And when human brain gets bigger, the skull holding he brain also gets bigger. which makes the birth way becomes too small for a fully developed human unborn child. as a result, human babies born before they're completely developed on the womb, for example if you consider a foal which was completely developed in the womb can walk ad stand earlier than humans. but here the undeveloped child was like a clay, it can be easily constructed by the society into what they want. whereas the horse foal is like a glass, when you try to change it, it may Leads to crack in it.

and another unique thing in exist in humans is their language, even though it wasn't the first verbal language it stands to be unique because of his imagination. for example, if you consider a monkey, 

it may rise a specific sound to aware its group from a lion, And another specific sound to aware its group from eagle. Here a monkey can only say what it sees. but only humans are capable of saying that the lion coming out there is the protector of our ancestors. Humans also can change their self, according to their situation and have capacity to change their mind according to their ideologies. 

our earth and white dwarf ,

 White dwarf : white dwarf is one of the stage of  stars like sun, who are too small to become a black hole or neutron star 

It was told that our sun will  turns into a white dwarf  in 75,000  years .

If our sun turns into a white dwarf , 

1) our earth will be forced to accept low brightness, which would badly affect photosynthesis. The luminosity of sun is so low because of it's smaller size. 

2) ⋆Even though the luminosity of white dwarf  is very low, it naturally hotter than sun (white dwarf's temperature is nearly 100,000 kelvin ; sun's temperature is nearly 5,772 kelvin ),

⋆ These small stars retain this massive heat from residual energy of sun(no fusion take place on white dwarf),

⋆ and our earth will be very close to the star on that time due to star's high density( even though the white dwarf is small it's denser than main sequence). 

⋆which leads our earth will be forced to accept higher heat than ever before .

But before this small star destroy us, pollution in our earth will destroy humans and his surroundings.😔😔😔

neutron star and earth

 NEUTRON STAR: A star which was ran out of fuel with a collapsed core is called as neutron star. ⭐ 

 Imagine, that our earth is rotating around a neutron star, what will happen ? the answer is destruction. Neutrons stars  emit radiation for particular interval of time which causes our earth(humans and animals) to continuous encounter of radiation such as gamma radiation.They are extremely hot, that they can evaporate earth's massive water resources(even though that they're hot at beginning, they begin to cool by time). Even though the neutron stars are hot they aren't that much of  brighter,which would affect photosynthesis.   

     FACTS: 

 1) The nearest neutron star is 500 light years away .

2) One table spoon🥄 of neutron star weighs about trillion kilogram.

3) Neutron stars are on the length of  about only 20 KM                                                    

 TWIST; But in reality sun just holds one-tenth of mass needed to eventually become a neutron star😜. Instead sun turns into a white dwarf.

WHAT IF HUMANS DIDN'T EXIST ?

Have you ever thought about a world without a human species ❔ what if humans didn't exist along the history of earth's travel of  life ❔ Existence of humans on earth surface is really being a curse to the world history .

pollution; pollution began to exist on our earth, when human species completely gained their fully developed smartest brain.

1. If we start from air pollution, it was said that now nearly 90% of human populations were tend to breath polluted air. sometimes leaves tend to loose their chlorophyll  due too sulpher dioxide presented on polluted air. even marine animals faces a critical situation such as ocean acidification . and also air pollution  continuously damaging ozone layer. And usually we humans are the main cause of all of these disaster 

2.not only air pollution but humans also generate water pollution, land pollution , thermal pollution, light pollution, radioactive pollution and the list goes on .

          so, if literally we human species didn't stepped on the earth, other animals may have chance to see a pollution less world 

humans lead other animals to the tomb; Extinction of other animals ;  humans destroyed millions of species for flesh and many other purposes ,for example ,tsamanian tiger, pyrenean ibex, aurochos , great auk and mammoth were went extinct by hunting. dodo and stellar sea cow, were killed for flesh . pinta tortoise went extinct due to goats which were introduced to pinta island by humans and rats which destroyed  the young  ones of pinta tortoise 

humans also saved some species;  on a particular time when humans stops migrating , and started to live on permanent settlement, there they've started to save animals from being extinct , yes! i am  talking about farm animal, if we consider a chicken which lives on forest, it can be easily hunted by animals and yes! humans too. and there is probability of  that animal being extinct in many ways, but when these forest chicken turned into farm chicken they were breed by humans for they're use  and killed so. even that was small life time for farm chicken compared to a forest chicken which lives 20 to 25 years they're one of the species saved by humans from being extinct. 

                                        so if humans didn't exist, some species have gone extinct but many species have been saved

no humans, no history; on case of not emergence of human species on earth's history, when we imagine that an alien is reading earth's history book, it won't find anything else like, " this king invaded this land and that king revenged that king ....... ''  like you used to read on you're history book 

humans and asteroid ;

humans are now so knowledgeable. so, that they'll be capable of saving the earth in future, such as saving earth from asteroid attack. but if humans didn't exist. this heroic event can't takes place on earth's history

 

The Art of Lying

According to communication science, lying indicates physiological changes. so  let's see few of physiological changes take place while lying; 

 1,interrupting; imagine a situation, where you are on your dining table with your family members who are discussing about  the missing marshmallows from the  kitchen cupboard, you have a good chance to find the thief, just observe the talk,if somebody says  like, "hey what happened to your exam marks ?" like trying to divert that investigation into a unknown topic, she's the culprit😼😼 . it was told that liars usually tries to separate them from the crime.

2.more negative talks; And if you don't have any choice, like dinning table investigation , it's okay, you've another chance to find the marshmallow thief, and again' use your power of observation, to find more negatively talking person on that day ; for example that thief may scold her phone📱📱 for missing her online class or grumbling  about a bad climate ☔☔or scolds you for not closing the main door and the list goes on,it was told by communication science that the guilt of stealing marshmallows makes them do like that.

3.story making; and if you still didn't find the culprit , you've a last chance😎😎, and switch on your power of observation, for example imagine that you're  inquiring your family members about the missing marshmallows, and if you found one of the person giving statement like " i am not supposed to steal the marshmallows, cause i don't even know that those things exist in our home " instead of simply saying that "i didn't steal it " she is the culprit , it is nature of liar to manage  the situation😉.

Free radicals

FREE RADICALS: They are unpaired valance electron of oxygen molecule.

Imagine that , a oxygen atom inside your body tend to lose a electron ,this unstable oxygen atom tries to steal electron from another atom to become a stable atom

free radical stealing electron from stabel oxygen 

more free radicals damaging cell in our body

which in turn creates more free radicals , this more free radicals together tries to steal electron from a body cell and damage the cell, to avoid this lose, antioxidants👼 behave elegantly by providing electrons to free radicals avoiding damage to body .

sprout of oxygen

I wonder, what happens on sudden increase of oxygen on the earth atmosphere? Do you think that it will be a boon to us? actually, the real answer was kind of bitter, increase in oxygen rate leads to a biggest curse that you've never met. even though it holds some merits on it. 

first of all, increase in oxygen rate on atmosphere, let more sunlight penetrate through the earth. which in turn results in a brighter climate. but this one merit can't paint curse as a boon. in fact, humans and animals' breath air with only 21% of oxygen while other 79% of air is of other gases like nitrogen.When oxygen rate increases , we were tend to breath pure oxygen.   And when we breath the pure oxygen it leads to emergence of free radicals on our body, which if  continued to  stay in our body, leads to cancer.and increase in the level of oxygen rate also increases combustion rate, due to which a candle will be able to fight with LED light💡 and forest fire runs faster than ever 

cryptic marine

cryptic marine we all have been searching for mysteries outside the world. something supernatural or Astro biological and the list goes on. But you know the many unsolved mysteries are hides under the blue paint of our earth which we used to call as ocean. according to me ocean just holds enough mysteries for human brain to consume.it all begins at the occurrence of water molecules at the surface of the earth.it was told that asteroids are the biggest source water supplier to the earth. Which carries hydrogen and oxygen from a supernova event or somewhere from a hot star's core. Which was later converted into water due to extreme heat🔥. And it was told that, first life might have been raised from ocean with a little help from lightening according to spark theory (based on Miller and Urey's experiments). And also, ocean feeds with 17% of edible meat globally. whereas many mysteries like Baltic Sea anomaly, mystery of 52 hertz whale, Bermuda triangle, Mariana trench and the list goes on.