Showing posts with label climate. Show all posts
Showing posts with label climate. Show all posts

Sunday, June 3, 2012

Climate change denial


Denial brings controversy and that is worrying, because when there are two positions faced in this way, it usually always exist an undercurrent of intentions in the majority of cases not reaching in its entirety the citizen of a foot. And most times, not to say always, that background is economic. In the issue now before us when were the problems really raised? When there was to decide what debiamos spend the money: curbing climate change or to promote the growth of companies that exploit non-renewable resources such as oil, coal or natural gas.

Denial postulates that man is not favoring that climate change and that this is due to natural causes, so it is not necessary to reverse the numbers seeking to stop it. Advocates consider climate change as a clear and proven reality, say that the denial is nothing more than a pseudoscience that denies global warming is being produced by the man and minimizes their importance to refuse to take action. In general, this denial is fostered by the big business oil and political supporters of the free market.

And what is the reason that this issue is gaining so much relevance these days? The cause is that they intend to extend it to the classrooms of America, where trying to decide if it is relevant or not teach students what the climate change, which are the causes and how to stop it and if this teaching should be accompanied also his opposite belief, i.e., denial, presenting their students as an alternative also scientifically based it.



In some States such as Texas, Utah or South Dakota, is beginning to teach the denialas a valid scientific theory. Deniers demand, with this implementation in schools, that only one side of the debate, claiming that it must show the pros and cons of both positions is not taught.
Proponents of climate change, on the other hand, remember them that 97% of scientists believed that climate change is attributable directly or indirectly to the man, and that denial has no scientific basis behind it, and that only made biased readings of scientific reports, rescuing only the data which may be more favourable to its position.




In conclusion, when this position was created within the framework of a crisis FINACE as the current and by sectors that benefit from this kind of approach, we have forced to consider that denial is, at least, a suspected position.




Tuesday, January 3, 2012

As climate change affects biodiversity




Climate change It has become one of the main threats to the balance of nature and this means in particular that what is at stake is something as vital as the biodiversity and the maintenance of the ecosystems. In this issue we turn this article from Erenovable.


Climate change is the set of changes that are occurring in the Earth's climate system. Among them we can mention:

the increase in temperature, changes in precipitation, which become more extreme climates, increases in the level of the sea, changes in water resources

This set of imbalances affecting the flora and fauna in multiple ways: individual agencies, entire populations, the geographical distribution of species, to the functioning of ecosystems, etc.

In future, if they continue aggravating these climatic imbalances many species will be in a critical situation. In these situations the survival depends largely on the ability to adapt to new conditions: that is migrating to another Habitat, changing patterns of behaviour or through genetic modification.

But not all the species have this capability or these possibilities. The most vulnerable populations are due to its location (Islands, mountains and Peninsulas) are more difficult to migrate and those that are already weakened and have few individuals.

When this cannot be achieved the consequences will be serious. Reduction of population, decline in biodiversity in many areas and even the extinction of a worrying number of species. Future forecasts reflect this and are certainly alarming: the third part of the natural habitats are at risk of change or even disappear by the end of the 21st century (anticipation of the World Wide Fund for nature - WWF).
As I said many species will be affected by climate change and - therefore - this will have impact in biodiversity.. Here we have some cases already documented:


The golden toad native Costa Rica suspected that it was already extinct, the cause is the lack of ability to adapt to the temperature change that occurs in its Habitat.

Some birds being altered their behaviour, as for example with the Blue charas that they live in Arizona and that they are playing ahead of time.

Many plants in habitats mountain are migrating, i.e., moving to higher latitudes to find a less warm environment, and has been, for example in the Austrian Alps.
The mammals in the Arctic are the decrease of the ice, among them one of the most affected is the polar bear.

Due to the increase in the surface temperature of the seas, coral populations are shedding the algae responsible for give color to the coral. The result is bleaching of corals and the alteration of its production of nutrients.

In many areas of the Antarctic , there are serious reductions in populations of penguins, which in some cases have declined by 33%.