portal-3

A group of scientists has found for the first time embryonic remains of the group of dinosaurs carnivores including T.rex: fossilized jaws and claws show these record-sized babies closely resembled adults and were “born prepared” to hunt.

The bones indicate that these were larger than any other known dinosaur, 1 meter long, or the size of a medium dog, and that they hatched from what must have been enormous eggs, perhaps exceeding 43 cm.

Smaller cousins of the T. rex

The approximately 77-million-year-old jaw, about 3cm long, was unearthed in Montana and may belong to a species called Daspletosaurus.

The approximately 72-million-year-old wedge-shaped claw comes from the Canadian province of Alberta and may belong to a species called Albertosaurus.

Both are slightly smaller cousins of Tyrannosaurus rex. The largest known tyrannosaurs exceeded 12 meters in length and 8 tons in mass. The jaw has distinctive tyrannosaur features, including a deep groove on the inside and a prominent chin.

Edinburgh University paleontologist Greg Funston, lead author of the research published in the Canadian Journal of Earth Sciences, said that scientists were amazed at how similar embryonic bones were to adult tyrannosaurs and the jaws had functional teeth.

–
The news

Embryonic remains of carnivorous dinosaurs such as a T. rex are found for the first time

was originally published in

Xataka Science

by
Sergio Parra

.

Experts call it "the best impression of a 215-million-year-old dinosaur footprint" found in a decade. But its discoverer is only 4 years old..

The four-year-old girl found the dinosaur footprint on a beach in Wales that dates back 220 million years. The footprint was most likely left by a small, thin dinosaur that walked on its two hind legs.

A pristine footprint

The print measures just over 10cm long. Experts believe the footprint was probably left by a dinosaur that was about 75 centimeters tall and 2.5 meters long and walked on its two hind legs.

https://www.xatakaciencia.com/paleontologia/se-encuentra-que-posiblemente-sea-dinosaurio-raro-hallado-fecha

In Xataka Science

What is possibly the rarest dinosaur found to date is found

Lily Wilder made the discovery on January 23 while walking along a beach in South Wales with his father and dog. The family was heading to the supermarket when Wilder saw the footprint printed on a rock.

In Xataka Science

Why do children like dinosaurs so much?

Shortly after posting a photo of the discovery on social media, the National Museum of Wales contacted the Wilder family, and officials eventually recovered the print and took it to the museum.

–
The news

A 4-year-old girl finds a dinosaur footprint in an almost perfect state of preservation

was originally published in

Xataka Science

by
Sergio Parra

.

Economic narratives: How fake news and viral stories affect the economy It is a different book about how economy and society are intertwined because it adds a new factor that is often not taken into account in this relationship: contagious folk stories that spread through word of mouth, the media or social networks.

Its author is Robert J. Shiller, 2013 Nobel Prize in Economics.

Storytelling

Popular sentiment very frequently fuels new decisions that, ultimately, in turn affect theThe decisions of economic agents, like a fish that bites the thing: how and where to invest, how much to spend and save, study at university or enter directly into the job market and a long etcetera.

Economic narratives: How fake news and viral stories affect the economy (No collection)

Today on Amazon for €20.85

The analysis of the narratives that underlie the economy, then, understood as the study of the viral spread of beliefs and stories that affect people's behavior and their economic decisions, can improve our ability to anticipate and manage future economic events.

Because, although the economy is like meteorology, a non-linear dynamic system, by understanding how stories work and how our brain is influenced by them, we will at least be able to penetrate a deeper layer, honing not only our ability predicting the economic future, but also better understanding the past.

Since before the idea of “virality” existed, the stories people told each other about their experiences or rumors they heard have transformed markets and the economy. Many times, panics, real estate bubbles, stock prices or the future of new phenomena like bitcoin have depended on what one person told another: they are "economic narratives."

–
The news

Books that inspire us: 'Economic Narratives' by Robert J. Shiller

was originally published in

Xataka Science

by
Sergio Parra

.

Something minimal, irrelevant without context, like the tapping of a marble inside a metal container. It is nothing more than that. But it is a lot, because it is the sound, the noise, the verification that the mission has worked and that we have the first samples of an asteroid, here on Earth.

You can listen to it below.

Hayabusa 2

The first samples of materials extracted from beneath the surface of an asteroid, the asteroid Ryugu, dated to 4.6 billion years ago, landed in Australia on December 6.

Japanese scientists Hayabusa mission 2 They have released a video of a maneuver to immediately verify what was contained in the sample capsule received. To confirm without opening it that the capsule had samples inside, the scientists turned the capsule upside down and got the response with the following sound:

While at the Quick Look Facility in Australia (before opening the capsule back in Japan), the team tried to hear if a sample had been collected using a high-performance microphone as they turned the capsule over. This is the sound of Ryugu! pic.twitter.com/gfaTk94QmH

— HAYABUSA2@JAXA (@haya2e_jaxa) January 28, 2021

The capsule contained in total 5.4 grams of samples. On February 22, 2019, the probe successfully touched the asteroid after a controlled descent to take samples, obtaining this amount of regolith. The tweet said:

While at the Quick Look Facility in Australia (before opening the capsule in Japan), the team tried to listen to whether a sample had been collected with a high-performance microphone as they turned the capsule upside down. This is the sound of Ryugu!

In Xataka Science

The Japanese probe Hayabusa 2 has fired a projectile to make a crater on an asteroid

Its study allows us to better understand how the Solar System was formed and consequently our planet and us. That sound was the clue that we were on the right track..

–
The news

This is the first sound of the first samples of materials extracted from beneath the surface of an asteroid

was originally published in

Xataka Science

by
Sergio Parra

.

He confirmation bias It consists of embracing a belief and seeking only information that supports it, avoiding as much as possible information that calls it into question.

This includes, naturally, people who generate ideas that conflict with our ideological framework. That is the biggest gap of political tribalism (right-left) is not due so much to rational arguments as to this bias.

I don't even listen to you for money

The algorithmic echo chambers of social networks, in fact, are not the cause of the increase in the Us-Them gap, but rather it is the reflection: algorithms adapt like a glove to our confirmation bias. That is to say: They give us what we want, what we need.

In Xataka Science

Facebook mind: how algorithms make us live in bubbles

And they avoid giving us what we do not want to hear, what we do not want to attend to, what bothers us, what irritates us, what could undermine our beautiful ideological building (tall and unstable like a house of cards, actually).

So much so that we are even willing to lose the opportunity to win a sum of money as long as we are not exposed to Their ideas. Not all, but a significant majority.

In Xataka Science

We must demand greater control of algorithms: our freedom is at stake

Specifically, as revealed This studio, up to two-thirds of people (both liberals and conservatives) gave up the chance to earn extra money so they wouldn't have to listen to the other side. And they didn't do it because they already knew what the others were going to say., but because it bothered them, could create frustration, or would require too much effort.

The dislike was applied to topics such as same-sex marriage, elections, marijuana, climate change, guns and abortion.

In other words, which corollary: Ideologically committed people are equally motivated to avoid cross-cutting information at the ideological level.

We love ideological bubbles., also because our brain is not wired to assimilate large numbers of people (let alone those who are very different from us).

That is why, in the real world, where we are seven billion people, it is so ridiculous to see a person who says things like "the worst always happens to me." But it happens, because, in addition to confirmation bias, we are also crossed by a deep selfish and narcissistic bias, as you can see in the following video:

–
The news

People are capable of giving up money in exchange for not listening to people with ideas contrary to theirs.

was originally published in

Xataka Science

by
Sergio Parra

.