Tarantulas evolved blue colour 'at least eight times'

Published: 28 November 2015

That is the conclusion of a study by US biologists, exploring how the colour is created in different tarantula species.
The hue is Caused by tiny structures inside the animals' hairs, but vary across Those shapes the family tree.
Sr. Hsuing of Ohio University, has a doctorate in science, says these tarantulas have the blue color to have had to evolve least eight times, have known geneologic doing a tree, forming one large and detached by one of the branches of the blue tarantula

The team also purchased specimens of eight tarantula species, and took a close look at those blue hairs.
They used electron microscopes to zoom in on tiny shapes within those hairs and conducted simulations of how those shapes could produce a "structural colour" by reflecting - very specifically - this wavelength of blue light
.
The results, again, pointed to the colour cropping up multiple times independently: several different types of shape could be seen, even on the same branch of the family tree.
"That's one of the reasons why it must have evolved so many times - because we don't see a very clear pattern of how these different mechanisms split," Mr Hsiung said.
"If we could see a clear split, then it might have evolved just one or two times. But it's all over the place.

"But if it's not for other tarantulas, then it must be to some other receivers out there."
It may be that this colour helps conceal the critters from their prey while they hunt at night; or perhaps it serves as a warning to stop the tarantulas themselves being eaten.
"We don't know yet," Mr Hsiung said.


Link: http://www.bbc.com/news/science-environment-34944735

Why Greeks are exhuming their parents

Published: 26 November 2015

Katerina kitsou, For the writer realized that this weeping beside the tomb of his father, who is buried for more than seven years ago, what happens is that your children can no longer pay the grave of his father.

The author says that Greece hit Athens and Thessaloniki and that means there many people who are dead and tombs of three years for the dead are rented and if they can not afford it are reused for other dead. They use the tombs of respect for the dead.

Petros Bakirtzis dug to see what's inside the tombs and fortunately all the dead were already broken, some had shorts and shoes as you said with irony.

My opinion:
I miss this article because I find it quite shocking that families have to pay too high a salary to have a dead buried, because today much of Syria is being massacred. It is an issue that has to talk in great detail because many people are going wrong.

A Point of View: The all-American drive to legalise marijuana

Published: 8 hours ago 29/11/15 at 10:59 ( Magazine )

In western Canada put marijuana as a medical product to reassure i ease in this not approve much of America, but with a minimum consumption and not abusive.
After a steady 50-year war on marijuana legalization, the government clarified that drugs are bad for gentem but that could not consume as abusive because America is a free country, and people have to be happy in theory.

As an ex-chief of police in Vancouver said in a recent CBC documentary: "The only thing prohibition achieves is putting revenue into organised crime."Because otherwise marijuana could also be a large influx of money to the government only cares that, as the author of the text.

Obviously the government was money to be said that marijuana would be used for medical purposes, but it is clear that some people will not use it for medical purposes and the government knows it, but the government if vee money and is happy.



Link: http://www.bbc.com/news/magazine-34942443

'Li-fi 100 times faster than wi-fi'

Published: 27 november 2015

Li-fi concept means that it is a new technology that will leave behind the old wi-fi, giving more power to speed. That LED bulb, cable and internet pictures connector is needed.

It was tested this week by Estonian startup Velmenni, in Tallinn. The former gives 1Gbps internet, and laboratories testing the new Li-fi can reach more than 224Gps.



To carry out the '' li-fi '', she is taking place at the University of Edinburgh.
Since they were able to get to do this, I could innovate it in hospitals and technologies that may be more successful.

Link: http://www.bbc.com/news/technology-34942685

Faith, hope and Call of Duty: 21st century spirituality

Published:19 October 2015

NabiilaBee is a bulimic girl who impacted a lot in society in recent years, and when she was 16, she wanted to kill because they wanted to take studies in places where they are prohibited.

Still she has been struggling to perform an egalitarian Islamic society have.

She thanks to this, has come to have a great reputation and have more people against hijabs. She is proud that people help him and follow him to social networks to try to change society.

Another case that cause discomfort in people, war games are a case is the Call of Duty.

Now she is 21 and critique games Islamist violence against people because today things are not well.Young people do not like killing people as in the case of a 12 year old text. But the big people take it as a distraction, when this is happening in other countries.

Many people are against violent video games, but they buy it to try it, where out obscene scenes on religions.

Link: http://www.bbc.com/news/technology-34549270

Secrets of Patagonia's rare and violent volcanoes

The eruption of Patagonia was the most rarest eruption to the world.

Hugh Tuffen is one of the assist to film this eruption on 2014, the Hugh Tuffen says was an unusual and important eruption a particular explosive king of magma, every 50 years this volcano enter to eruption. 


Patagonia is a one of the millions volcanoes to the world but one of the most important for his peculiar characteristic of lightning, and the most other's volcanoes.

This volcano was named Calbuco the people to invastigate that's eruptions don't say was one of the most rarely and violent volcanoes, 70000 years ago this volcano erupt and say that an entire population was extinguished.

Link; http://www.bbc.com/earth/story/20150923-secrets-of-patagonias-rare-and-violent-volcanoes at 18:27

Video: https://www.youtube.com/watch?v=rVcTPfBxOPU