Tropical fish colonizing the Mediterranean

The tropical fish are colonizing the Western Mediterranean, his population has been trebled in the last decades. It is a question of tropical and subtropical species proceeding from the Atlantic Ocean that have entered the Strait of Gibraltar.

These fish remain in the Mediterranean because favorable conditions are finding for his development, topcoat the increase of the temperature during the second half of the XXth century because of the global warming.

Not all these tropical species behave equally, since someone settle definitely while others only do periodic incursions. Apparently these fish have not provoked problems the indigenous species in the western Mediterranean, on the other hand in the oriental one yes that changes have been detected in the marine fauna.

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Photo Fox

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The first nuclear fusion plant in the United Kingdom

Some scientists of the United Kingdom have prepared a plan so that the first nuclear fusion head office is a reality in twenty years. The nuclear fusion is a surer and clean alternative of obtain energy that the current nuclear power plants that are based on the fission.

The nuclear fusion is the energy that takes place in the Sun, and it consists of the union of two atoms of hydrogen to achieve one of helium. In this process there is liberated a lot of energy, which is the one that wants to take advantage for our benefit. The bad thing is that it is not so easy to join two hydrogen atoms, for it we need that they reach very high temperatures, hence the technical difficulties of this technology.

But recently a report of the Research council of the United Kingdom (RCUK), which supervises the expense of the British government on the subject of science and technology, believes that many of these difficulties are on the point of excelling themselves. So the British scientists are thinking about being able to turn Great Britain in the first country that possesses a plant of energy based on the nuclear fusion.

Didcot in Oxfordshire, is one of the places that can lodge this scientific project, named Hiper. The report was realized by a team of experts in nuclear fusion, who think that a research center would be sufficiently big like so that in 2030 it was generating so much energy as plant of commercial energy.

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Bears Grizzly occupy the habitat of the Polar Bear

Biologists of the American Museum of Natural history and of City College of City University of New York (CUNY) have discovered that the bears grizzly are occupying the territory of the polar bears. It is a question of a study realized in the National park of Wapusk (Canada), where the bears sightings grizzly have increased recently.

Robert F. Rockwell, teacher of the CUNY has mentioned that “the Bears Grizzly are a new species in the habitat, and are a potential competition for the polar bears that live in this area”

The first observation was in August, 2008 while they were investigating the dens of the foxes from a helicopter. This impelled the investigators to look at the previous records to obtain an idea of the population of bears in the park. There were no bears evidences grizzly before 1996, not even in the information of centuries of exploration of Hudson Bay Company. Nevertheless, between 1996 and 2008 the team found nine confirmed sightings, and in the summer 2009 there were three more remarks.

One believed that the arid scenery of the north of the Bay Hudson was a breach that these bears could not cross, but it seems that his flexible diet has allowed them to emigrate to these places. Now when some bears grizzly have come to the plenty of the National park of Wapusk, with big quantities of fish, bay, caribús and elks, they wonder when they will form a stable colony.

The problem is that the Grizzly can kill the babies of polar bear in addition to stealing the preys from them and his survival is more difficult to them. It is still not known if these sightings belong to stable population or vagabonds, the test will come when there are realized sightings of pups, of that time it will be possible to be said that they are residents of the park.

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Photo Earl

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The climate change increases the cases of allergy

The increase of the temperatures caused by the climate change might be provoking the increase of the cases of allergy. These are the conclusions of a study presented in the last annual meeting of the American Academy of Allergy, Asthma and Immunology, in New Orleans.

The study of Dr Renato Ariano, the Director of Allergy of the Hospital of Bordighera (Italy), he suggests that the biggest temperatures lengthen the period in which the plants develop pollen, ésto the production increases and as a result also the people who might suffer allergies.

During the last 30 years Dr Ariano registered the pollen quantity during the whole period, bearing in mind principally the five most sensitive varieties birch, cypress, olive tree, grass and stinging nettle.

Between the year 1981 and 2007 the remarks showed an advance in the beginning of the period of the pollen. In case of the stinging nettle, the period went forward 80 days, and in the olive trees, the period went forward 30 days. Also it was that the inhabitants of the area sensitive to the pollen had increased, while the allergic ones to the mites were supported without changes last 30 years.

This theory needs more studies, what is clear is that the period of the pollen has got longer and the levels are major, but also it can be that the grains of pollen are more alergénicos, since the plants are cultivated at major levels of dioxide of carbon.

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Images of satellite of a coalmine destroying a mountain

In the images you can see like a coalmine outdoors it devours a mountain of the Appalachians in Virgina Occidental (USA). The space between two photos taken the satellite Landsat 5 of the NASA is 25 years, the first one is of 1984 and the second one is of 2009.

The photos show how the forests disappear and the scenery fills with gigantic excavated craters following the seams of the coal. The area of the mine has grown during this time more than 40 square kilometers.

The consequences of this type of mines are great, not only it is the destruction of the nature, but also the contamination in the shape of acid rain and gas emission of greenhouse effect.

Doctor Margaret Palmer of the University of Maryland has warned that “the scientific evidence of the serious environmental and human impacts of the mining of mountain is big and irrefutable“. Also, “his effects are generalized and of long duration and there are no proofs that the mitigation practices could revertir successfully the caused damage.”

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Switzerland says "not" to the defender of the animals

70,5 % of the Swiss has voted "not" to the creation of the office of the lawyer of the battered animals. This was an existing juridical figure in the canton of Zurick that the Protector of Animals of Switzerland wanted to generalize to the whole country. Unfortunately they have met the reality of not very sensitive population, who has thrown below the project. From the parties that have done campaign in against one affirms that the animals are already sufficiently protected and that it would be better to center on the prevention and education than on lawyers.

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4 advices to help to the planet

To save the planet is not an only one question of big summits and new technologies, we all can reach port very much changing little our habits and thinking about our actions. Some of these small actions that you can do to help to the planet are:

Have your car to point. The best thing is to move in bicycle or public transport, but sometimes there is no any more remedy to use the car. That's why it is important to have it in conditions, since a good putting to point could help to contaminate much less.

He eats less meat. The meat is one of the most pollutant industries, so that if we reduce our consumption we can help that is contaminated a little less.

Local eaten buy. The meal does not grow spontaneously in the supermarkets, sometimes it comes of very far, and contaminating for the way. That's why if we can choose local products, which have to displace little, we will contaminate much less.

It optimizes your house. Your house is a place where you must be to taste, that's why a good isolation is very important to spend less energy at the time of supporting the comfort temperature.

Photo Tambako The Jaguar

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