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El investigador del CSIC Manuel Dall’Osto relata la instalación del campo de investigación de la misión MOSAiC en la banquisa ártica para estudiar el clima polar, atento a las visitas nocturnas de los plantígrados
Los efectos gravitatorios son una consecuencia de la forma del espacio-tiempo
Men's conversations with other men tend to focus on depersonalized topics, such as shared activities, politics, football, etc.
On the contrary, with women, men tend to reveal their emotions more frequently and report that relationships with women are more meaningful, intimate, satisfying and pleasant than relationships between men
Intimacy and sex
Men's concern about status differences has implications for their friendships, so they tend to be cautious about entering into very intimate relationships with other men where weaknesses or concerns are revealed: such information could one day be used against you.
As suggested in A study by Valerian J. Derlega, Bonnie Durham, Barbara Gockel, and David Sholis: If men do not reveal personal information, other people cannot understand, predict, or control their behavior.
Although men will reveal facts about themselves, They are much less willing than women to share emotions. They are particularly unlikely to share negative emotions that reveal vulnerability, such as depression, anxiety and fear, as suggested in this other study.
Men's conversations with other men tend to focus on shared activities or depersonalized topics, such as politics and sports. Compared to women, they are more likely to define intimacy with other men in terms of shared activities rather than shared emotional experiences.
However, when they are with women rather than men, men make more emotional disclosures.. Which could partially explain why '(1) men tend to fall in love more easily than women; (2) women tend to fall out of love more easily than men.'
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The news
Men are more emotionally open to women than to other men.
was originally published in
Xataka Science
by
Sergio Parra
.
Christopher C. Gilbert, from Arizona State University, has filled an important void in the fossil record of apes with the discovery of a 13 million year old fossil unearthed in northern India comes from a newly discovered ape, the oldest known ancestor of the modern gibbon.
The find was by chance, on a small hill in an area where a fossil primate jaw had been found the previous year.
Kapi ramnagarensis
The fossil, a complete lower molar, belongs to a previously unknown genus and species (Kapi ramnagarensis) and represents the first new species of fossil ape discovered at the famous Ramnagar fossil site, India, in almost a century.
Map illustrating the location of Kapi (black star) in relation to modern (dark green) and historical (light green) populations of lesser apes and the approximate distribution of early fossil apes in East Africa (blue triangles). Green triangles mark the locations of previously discovered fossil gibbons. The new fossil is millions of years older than any previously known fossil gibbon and highlights its migration from Africa to Asia. Illustration by Luci Betti-Nash.
The molar was photographed and scanned by computed tomography (CT), and comparative samples of teeth from living and extinct apes were examined to highlight important similarities and differences in dental anatomy. According to Gilbert explains.:
From the shape and size of the molar, our initial assumption was that it might be from a gibbon ancestor, but that seemed too good to be true, given that the fossil record of lesser apes is virtually nonexistent. There are other primate species known during that time, and no gibbon fossils had been found anywhere near Ramnagar. So we knew we would have to do our homework to find out exactly what this little fossil was.
In addition to determining that the new ape represents the oldest known fossil gibbon, the age of the fossil, around 13 million years, is contemporary with known great ape fossils.
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The news
Missing link in ape fossil record found in India
was originally published in
Xataka Science
by
Sergio Parra
.
Using the Murchison Widefield Array (MWA) telescope in Western Australia, it has been done the deepest and widest search at low frequencies for alien technologies.
After searching a patch of sky known to include at least 10 million stars, around the constellation Vela, no trace of them has been found. The telescope searched for powerful radio emissions at frequencies similar to those of FM, that could indicate the presence of an intelligent source.
Murchison Widefield Array
The MWA is an inherently versatile instrument with a very large field of view (on the order of 30 degrees wide) capable of covering a wide range of scientific objectives. An MWA antenna consists of a regular four-by-four grid of dual-polarized dipole elements arranged on a 4 m x 4 m steel mesh ground plane. Each antenna (with its 16 dipoles) is known as a "mosaic".
He cited study was carried out by CSIRO astronomer Chenoa Tremblay and Steven Tingay, from the Curtin University node of the Centre, and has been published in Publications of the Astronomical Society of Australia.
As Tremblay explains:
We watched the sky around the Vela constellation for 17 hours, looking more than 100 times wider and deeper than ever before. With this data set, we found no technological signatures, no signs of intelligent life.
The MWA is a precursor to the next instrument, the Square Kilometer Array (SKA), a €1.7 billion observatory with telescopes in Western Australia and South Africa.
The SKA will be built in the same location as the MWA, but will be 50 times more sensitive and will be able to conduct much deeper SETI experiments, which is equivalent to saying that will be able to detect Earth-like radio signals from relatively nearby planetary systems. Let's keep our fingers crossed for then.
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The news
In the sky around the Vela constellation, with at least ten million stars, no trace of civilization is detected
was originally published in
Xataka Science
by
Sergio Parra
.
According to a new study, blue jeans are a major source of microfiber pollution in oceans and lakes.
A pair of jeans can release more than 50,000 microfibers per wash. Which is a relevant environmental problem if we take into account that Approximately half of the world's population wears this item of clothing.
polluting clothing
Yves Saint Laurent would like to have invented jeans, as he confessed in 1983 to The New York Times: "They have expression, modesty, sex appeal and simplicity, everything I want in my clothes." Not in vain, blue jeans are the most popular garment in the world.
The microfibers included between 87% and 90% of anthropogenic particles found in sediments of the Canadian Arctic Archipelago, the Laurentian Great Lakes, and shallow suburban lakes in southern Ontario. Twenty-one to fifty-one percent of all microfibers in the sediments were anthropogenically modified cellulose (AC), of which 40-57% were indigo denim microfibers (12-23% of all microfibers analyzed).
Microfibers from washed jeans were consistent in chemical composition and morphology with those found in the environment.
Thus, the study concludes, blue jeans are an indicator of the widespread burden of anthropogenic pollution by significantly increasing the environmental accumulation of microfibers from temperate to arctic regions.
Furthermore, as indicated Dana Thomas in his book Fashionopolis, making a pair of jeans requires 70 liters of water, 1.5 kilo-watts of energy and 150 grams of chemicals. More than 4 billion pieces of denim leave textile factories every year, most dyed blue with synthetic indigo fixed with a powerful bleach that makes it highly polluting.
Indigo is the only pigment capable of giving jeans their unmistakable bluish color. It is currently synthesized chemically on a global scale and it is estimated that around 45,000 tons are produced annually, of which 95 % are used to dye jeans.
Thus, More ecological alternatives are being sought for the manufacture of this textile, like the one proposed by a group from the University of Berkley (USA) could have been achieved, according to A study recently published in Nature Chemical Biology.
Clothing is the second cause of pollution on the planet, to the point that in 2015 textile production emitted into the atmosphere 1.2 million tons of CO2That is, more than all the ships and planes on the planet emitted that year, according to data from the International Energy Agency.
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The news
Blue jeans are a major source of microfiber pollution in oceans and lakes
was originally published in
Xataka Science
by
Sergio Parra
.
The European Commission has agreements to buy more than one billion doses of five of them
A single dose is all it takes.