Asteroids, meteors, bolids, meteorites, comets… What are their differences

diferencias entre asteroide, meteoro, meteoroide, meteorito-astronomia-oumuamua-la daga de tutankamon esta hecha de meteorito-bolido de chelyabinsk-cometa Halley

Although space may seem a distressing and empty place, the truth is that it is full of millions of roaming travelers that, from time to time, can be seen from Earth. There are several types of them, and you’ve probably wondered more than once how to distinguish them. Here are some clues: Asteroids: rocky masses … Read more

Dossier “HOAXES OF VACCINES”. The vaccines that transform you into an X-Men

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It is the life of the hoax party. It has been an unprecedented success in social networks. Thanks to it, everyone now knows that messenger RNA (mRNA) vaccines do all sorts of nasty things to our genetic material. Needless to say, everything they cause is bad. Yes, conspiracists are extremely pessimistic… The truth is that … Read more

The lizards that weep blood

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Because of this peculiarity, they look like creatures out of some disturbed mind, but they are very real, both they and their bloody “weepings”. They do not “weep” blood because they have seen something horrifying, but because it is an extremely curious defense mechanism. This behavior has been recorded mainly in some species of horned … Read more

The Turing test: Can machines think?

test de turing-prueba de turing-piensan las maquinas-inteligencia artificial-alan turing-eugene goostman chatbot

With the advent of Artificial Intelligence (AI), our conception of intelligence has been slightly disrupted. After all, AI machines meet the requirements of some of the definitions of “intelligence”, such as solving complex problems. So, can machines think? This question was already proposed in the middle of the last century by one of the fathers … Read more

The link between the Bluetooth technology and vikings

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It seems that we are referring to the Pleistocene if we consider that 32 years ago, in 1989, the idea of the Bluetooth technology emerged, a wireless networking system designed to connect devices of all kinds with each other, to somehow unify technology. The Swedes Nils Rydbeck and Johan Ullman of Ericsson Mobile were the … Read more

“Walpurgisnacht”: the witches’ night

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I imagine you are all prepared for this unique night. What is going to be celebrated? Today is the “witches’ night”, one of the most important festivities of the witches’ calendar in Northern Europe. On this night, one of the most intense and frightening witches’ sabbaths of the year takes place at the Brocken Peak … Read more

Types of snakes according to their fangs

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Snakes have often been associated with evil, either for cultural reasons or, directly, because of our survival instinct. We fear and respect them and the venom they use to hunt and defend themselves. However, as it usually happens, fear is diluted when our knowledge about them increases. In fact, they are not all equally poisonous … Read more

Electrical therapies in ancient times

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Most of us are familiar with or have heard of electricity-based therapies. They are used in a wide range of medical disciplines: neurology, psychiatry, physical medicine, rehabilitation… Logically, we consider these techniques an advance of the modern world, because if electricity had not been discovered, they could not exist. It is true that electricity is … Read more

The SARS-CoV-2 vaccines. Part 2: Lights and shadows of vaccines

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In the face of the current situation, which will undoubtedly mark humanity forever, a race against time has been generated to try to overcome it as quickly as possible. Not in vain, in less than a year it has shown us how vulnerable we are, but also our resilience. The most promising weapons with which … Read more

The SARS-CoV-2 vaccines. Part 1: The mechanisms of vaccines

vacunas-sars cov 2-coronavirus-covid 19-virus-pandemia-ADN-ADN recombinante-vacuna de ARNm-ARN mensajero-mutaciones-sistema inmune-sistema inmunitario-inflamacion-linfocitos-linfocito T-linfocito B-macrofago-antigeno-inmunidad-memoria

Is the end of the pandemic near? Is SARS-CoV-2, the same one that has shown how fragile the egomaniacal Homo sapiens and his civilization are, giving its last breath? Will the longed-for vaccines end with this science-fiction situation? The vaccines are being presented as the definitive solution to our problems, the definitive weapon that will … Read more

The origin of nativity scenes

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The nativity scene tradition has become a true artistic expression. There are orthodox and heterodox nativity scenes worthy of admiration for their level of detail and complexity, not to mention the exquisite craftsmanship of some of their figures. Where does it come from? When did we start representing the events surrounding the birth of Jesus … Read more

“Smokescreen”: An expression with a military history

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“Smokescreens” are a strategy increasingly employed by politicians and the media to divert mass attention away from the truly important things and hide them. The expression has, therefore, a metaphorical use today, but not long ago it was used (and still is) in the military field to confuse adversaries and acquire strategic advantage. Let us … Read more

The crosswords that almost ruined the Normandy landing

desembarco de normandia-dia d-crucigramas-MI5-overlord-segunda guerra mundial-alemania-leonard dawe

D-Day, Operation Overlord, the Normandy landing. They are all synonymous referring to the most famous military operation of World War II that largely determined the final outcome of the greatest war in history. It began to be conceived as early as 1943 by Winston Churchill and Franklin D. Roosevelt, although they had to wait until … Read more

Deciphering the Garden of Earthly Delights. Part 4: The secrets of the musical Hell

satanas-demonio-diablo-hombre arbol-autorretrato-infierno musical-infierno-jardin de las delicias

It is a Dantesque place. The darkness has taken over the whole scene. Small glimpses of light can hardly be seen, only that emitted by fires and flames. It is a terrifying place, colonized by strange diabolic beings, made up of the most unimaginably extravagant mixtures. Humans suffer in various ways. They are the victims … Read more