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The celestial phenomenon is beginning to emerge shortly after sunset, when the two planets are visible to the west. The group said that astronomy is between 12 and 13 March next when the planets reach their closest approach, a phenomenon that is known in the jargon as astronomical conjunction.

We recommend starting to look at it from this evening to witness a planetary dance interesting that for many it clear why these ancient Greeks baptized bodies like planets, word in the language of this ancient civilization means “wandering.”

The planets unlike stars move in the sky at different speeds according to the distance you are from the Sun, said Urania.

Although he noted that the presence of planets in the sky also depends on the time of year that we observe in other words, the relative position of Earth with the orbit of each planet, which in the case of Jupiter place each day but low on the horizon, while Venus the brightest and lowest of the two rises every day, because it moves faster around the Sun

The combination of both movements will result in the dramatic rapprochement between the two bright planets in mid-March.

The group also pointed out that astronomical of this beautiful celestial phenomenon, there are other planets we see in the next few days, Mercury on March 6 low to the west and aligned with Venus and Jupiter.

Later that night also stands out as the red planet Mars, followed some hours later by the ringed Saturn.

The beautiful planetary alignment will be visible even from brightly lit cities and in more detail through telescopes or binoculars with which you can see in the case of Jupiter, its four largest satellites and Venus phases similar to that of our Moon.

Finally Urania Astronomical Society said that this type of planetary phenomena were very important in ancient times, as witness the legend of the Star of Bethlehem for many astronomers was born of a conjunction of Saturn and Jupiter in Mexico traditions such as the Lord of Tula in the state of Morelos where a fair in the town of Jojutla originated as a result of another spectacular conjunction of Saturn and Jupiter in the eighteenth century.

“Our intention is to apply techniques to obtain, collect and save avian cells and used for artificial propagation ,” said Mary Palma, project.

The bank is located on the premises of the bird sanctuary of El Nido, in the municipality of Ixtapaluca the central state of Mexico, which is home to over 3 000 birds of some 600 species, many endangered.

This shelter, which belong to a civil founded 47 years ago by the now deceased vet Jesus Estudillo, protects each species in pairs and in small communities, making it “in a habitat for the proliferation permissible.”

“We have to start preparing for the future and ensure that through artificial reproduction, prevailing species like raptors,” including the “Attila”, an imperial eagle which, despite being the emblematic bird of Mexico, is in danger disappearing, said Palma.

According to the researcher, this project, the first in Latin America, and “perhaps in the world” should be developed “immediately” due to “latent danger of disappearance of important species that are beginning to resent climate change and other factors such as logging and predation of fauna. ”

He explained that for several years, Mexico, like other countries, has genebanks to conserve the semen of mammals, especially cattle.

However, he said that the systems used for cryopreservation (freezing techniques) of semen of birds is not equal to that of mammals’ cells because it is more fragile. ”

“Normally, in mammals it is preserving semen, embryos and ova, but in the case of poultry, eggs definitely not because they come in we can preserve the egg with the yolk sac,” explained the expert.

The scientist responsible for the health of the birds of El Nido, said that in recent years the Organization of the United Nations Food and Agriculture Organization (FAO) has begun to have their own gene banks, but for now “only are targeted to poultry. ”

This project will be conducted by researchers at the National Institute of Public Health in the central state of Morelos, as well as the Metropolitan Autonomous University (UAM) in Mexico City.

The bird sanctuary, which the workers call the “Noah’s Ark Bird”, is recognized internationally as one of the first to achieve successful reproduction of endangered species, and has been awarded by the Worldwide Fund for Wildlife and United Nations, which was awarded the 1993 Global 500 award.

The center is supported by donations and the participation of about two thousand volunteers who are spread every day of the week the hard work of cleaning and maintaining the site.

The sanctuary is open to the public to sensitize people and convince them of the importance of protecting the environment.

Over 600 species such as eagles, hawks, owls, parakeets, cockatoos, macaws, toucans, pheasants argus, quetzals or ancestral birds as Casuarius, originating in New Guinea and Australia and considered the oldest species on the planet, are presented in areas conditioned to try to recreate the habitat in which they arise.

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Switzerland wants to finish
with space junk with satellite cleaners that will sweep
the remains of old rockets or satellites which total at least 16 000 objects orbiting
at high speeds around the Earth.

In many cases, these
stand in the path of the spacecraft or satellite
artificial and threatening to destroy chocarlos.

The Polytechnic
Fédérale de Lausanne (Switzerland) announced yesterday the launch of the first project
desorbitadores satellite, the CleanSpaceOne ,
with which it intends to launch into space within three years a set of
satellites specially designed for this purpose.

The process by
that these "sweepers" taken out of space junk orbits, the
begins with the launch of the satellites between 630 and 750 miles of
height to then be approaching the target orbit
to be eliminated through an ultra-compact engine.

At a speed of 28
thousand miles per hour, the CleanSpaneOne
will meet the target of their mission and embrace them with a kind of hook.

Once bound the
satellite cleaner piece of garbage, the first engine to use its
other's company launched into Earth's atmosphere.

The idea is that once
coming into contact with the gases that form, both objects disintegrate.

To learn more about space junk click on the image

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A friend help to reduce tensions prior to an examination, to overcome the assaults of other students and the bad times, however, the social rejection increases the stress levels , even more than the insults and aggressions, detailed research of the Society for Research on Child Development and Radboud University Nijmegen in the Netherlands.

The report, published in the journal Child Development , took into account 100 children 10 years and followed them four years.

Since children. The scientists began their study in 2004, when small children were in grade school. It took into account this population because previous studies had not at this age.

The experts were asked to minors to name their best friends in the classroom and those who molested or assaulted. They were also asked to describe who the peers who had more friends, who were the most rejected or attacked and who they were that assaulted.

The experiment continued once a year for four years. After this time was that having friends helped people receiving attacks or assaults by other students to overcome the situation less stressful. In fact, it was found that those who were rejected, suffer more stress than those who were assaulted.

hormonal balance.

Why? The researchers found the key in the hormone cortisol. This substance is known as the stress hormone mobilizes energy and therefore helps to answer when there are stressful situations.

However, high levels of this hormone can have negative effects. If you are still too high for too long, can lower the body’s defenses.

For these children, it was found that those with less cortisol had many friends who were assaulted were more and those who were rejected had the highest levels of the hormone.

However, children rejected by some peers, but they had friends, had a reduction in cortisol.

“The results show that even if your friends do not completely eliminate stress in school, they reduce it,” said Marianne Riksen-Walraven, one of the researchers.

For the Costa Rican psychologist Ana Morales Yendry beyond the levels of cortisol, friends are a strong support network, regardless of age of the person.

“The biggest and best friendship ties positively influence harmful events such as depression or sadness for a loss or stress. Friends make this easier to overcome. Also make them see their mistakes and help them improve,” he said.

More information (in English): Child Development

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The noise low frequency , in the range 20-200 Hz, causing ships, energy scans and WIN sonar cause stress in whales, which interferes with your immune system and low reproductive rate, threatening their livelihoods, according to a study published in the journal Proceedings of the Royal Society B.

It also generates a shift in habitat, changes in behavior and changes in frequency, intensity and timing of your messages, because the whales communicate with low frequency sounds as his life unfolds in low light and at considerable depths, by they can not rely on sight to interact with their peers.

Scientists reported a reduction in stress hormone in the feces of the species of whales Mysticety who live in the Bay of Fundy in Canada when vessel traffic was halted after the terrorist attacks of September 11 the twin towers in New York.

While not conclusive study is the first evidence of the impact of human noise pollution in the marine habitat and whale populations.

The study is the result of a finding that was not planned in the experiment, the researchers said. At that time Roz Rolland, New England Aquarium in Boston, took stool samples from whales in the bay to analyze hormones and determine the pregnancy rate in the species.

After the schism that led to U.S. attacks, traffic stopped and resulting levels of stress hormones, which also saw decreases.

“The big message is that there is enough noise in the ocean for us to worry. We must devise ways to build quieter boats or new methods of oil and gas exploration and sonars are issued on a different frequency,” said Rolland to the magazine Science.

Read the original article (in English): Science

Read original study (in English): Proceedings of the Royal Society B

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A historical study of DNA of the sheep shows how it has changed for the past 11 thousand years to adapt to domestication , as published in the journal PLoS Biology .

Directed by Dr. James Kijas of national science agency in Australia, the study tracked the relationship between about 3 thousand sheep by comparing 50 000 DNA fragments across the genome to analyze the genetic consequences of domestication and division of sheep in hundreds of races.

The study, the largest conducted so far shows how humans have shaped the sheep to adapt to different environments and increase specialized production of meat, wool and milk.

Thus, for example, identified specific regions of the genome of the sheep seem to have changed rapidly in response to the selection of genes that control traits such as coat color, body size, reproduction, and, above all, lack of horns, one of the first targets of selective breeding.

Moreover, not only details the domestication of sheep and migration patterns of this species throughout the world, but also provides information on the movement of human groups throughout history, the authors note.

“Our detailed genetic map indicates that sheep breeds have been formed in a changing environment that makes them different from other domestic animal species,” said Kijas.

He explained that “the frequent pairing and exchange of genes between animals of different races has ensured that most modern sheep breeds have maintained high levels of genetic diversity, in contrast to some breeds of dogs and cattle, which generally have higher levels of consanguinity. ”

This high level of genetic diversity implies that sheep farmers can improve certain characteristics of production “that could play an important role in feeding the growing population in the world, with an increasing demand for animal protein,” he said.

The technology used by researchers may help identify genetic variants that cause disease and may help producers to “enhance or eliminate certain traits through specific breeding practices,” he said.

The DNA sampling is based on research, covers 74 breeds of sheep worldwide.

Read original study (in English): PLoS Biology

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The discovery took place about seven miles deep after scientists cages placed in the trench, considered one of the deepest in the world to collect specimens of fish slimy (Liparidae).

The expedition leader, Alan Jamieson, said the boat up stations when scientists were elated to see the slimy fish specimens that had sought for years.

“Seconds after I stopped and thought ‘what’s that?’, While he was looking better this crustacean, which is much larger in size than you could ever imagine,” the researcher from the University of Aberdeen in the United Kingdom.

Jamieson said the expedition had been in the same place twice before but had never found a crustacean of this size.

“We came back two days later and all equipment deployed in the same place but we could not shoot or capture another specimen, were there one day and gone the next,” he added.

The team, comprising scientists from the National Institute of Water and Atmospheric Research of New Zealand and the University of Aberdeen, will try to determine why this type of crustacean that has evolved in size compared to similar species inhabiting the deep sea.

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A new study shows the relationship
between certain brain dysfunctions and
the development of obesity , so if not only depends on
sedentary lifestyle or poor diet attacking these points would not solve the
problem.

Researchers, led po Achim Peters, an obesity expert and professor
of the University
of Luebeck in Germany found that there is a direct relationship between the
brain function and the amount of food you eat.

Under the term "selfish brain," Dr. Peters describes the process
by which this body is made of the energy required to maintain
its vitality. As the brain detects any energy deficiency, the
sympathetic nervous system (SNS) and hypothalamic-pituitary-adrenal (HPA) is
immediately activated to generate stress and shoot well, an active demand for
the required energy.

Known as "pull the brain" or "brain pull", this feature allows
collect this energy or calories from the body, which generates
a double effect: on one hand, ensuring the integrity cerebral and, on the other,
help maintain body weight within appropriate limits.

However, if the "pull of the brain" does not work properly and the
nervous system response is weak, then the command fails
supply and the brain does not "pull" of the body the calories it needs. By
hence, energy accumulates progressively in the rest of the cells and, worse
Moreover, the individual eats more to meet their needs brain, complete with
your body is already more than enough power.

The study found that people whose brains work well, not
required to eat more to protect them. Thus, regardless of there
a wide range of food available, have neither the drive nor the
ingest craving: his body is protected and your appetite satisfied.

In contrast, those in which the response of "selfish brain" works
incorrectly need to consume more food to ensure that this body
kept in good conditions, despite that their deposits of energy is
are already exceeded, which will give way to overweight and obesity.

Peters regrets that despite these findings, the idea persists that
obese individuals lack the will, are lazy and have bad habits
of life.

"Advances in the field of cerebral metabolism show that in
many cases, overweight and obesity result from the efforts of the
person to cover the energy needs of your brain, "he notes. no doubt
These findings shed new light on the phenomenon of obesity,
everything in the way that has hitherto been perceived. Better understand where
comes is an essential condition to counteract or even eradicate
definitely.

Read original study (in English): Frontiers
in Neurogenetics

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A group of scientists was able to determine with unprecedented precision
achieved the cell flow
cancer in the body in real time with a new technology that could
accelerate the response to disease .

The technique disclosed in the journal Physical
Biology , can differentiate
cancer cells among millions of healthy cells and could serve to
reveal mechanisms that occur in the expansion of a solid tumor of a
organ to tissue of another.

So far, these mechanisms are a mystery to researchers and
a key in the fight against cancer and especially for the types
more resistant to therapies.

According to Jorge Nieva, Billings Clinic oncologist who led the study,
"This technology will allow scientists to speed the discovery of cures
for cancer. Are we expected to solve the problem of resistance
to chemotherapy. "

Another team of researchers responsible, Professor Peter
Kuhn said that in future this technology will assess developments
the disease in real time and changes in treatment instantly
and previous diagnoses.

The test, conducted at the Scripps Cancer Center (California)
were highly effective in patients with prostate cancer, breast and
pancreas, to much more accurately detect cancer cells in the
bloodstream of patients analyzed.

According to the study, the reliability of this new technique is much greater than the
methods currently on the market.

To achieve this precision researchers have used antibodies that
bind to proteins present in cancer cells. Once bound is
expressed in analyzes by fluorescence.

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The discovery of prostate cancer in a mummy of 2 000 200 years old indicates that the disease was due to genetics and the environment, said a professor at American University in Cairo.

The gene-environment dichotomy is key to understanding cancer. Professor Salima Ikram, a member of the team that studied the mummy in Portugal for two years, said Sunday that belonged to a man who died between 40 and 50 years of age.

He said it is the second oldest known prostate cancer.

“The living conditions in ancient times were very different: there were no contaminants or modified foods, which leads us to suppose that the disease is not necessarily linked with industrial factors,”he said.

A statement from your university says that the oldest case belongs to the skeleton of a king in Russia 2 000 700 years ago.

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