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luni, 22 octombrie 2012

Verdict surpriza in cazul probelor din lacul Vostok

In luna februarie 2011, oamenii de stiinta au forat in premiera pana la aproape patru kilometri in lacul Vostok, aflat sub gheata din Antarctica. Cercetatorii au analizat mostrele luate si au constatat ca acestea nu contin niciun fel de forma de viata, in afara bacteriilor provenite de la instalatiile de foraj.

Lacul este acoperit in totalitate de gheata, fiind complet izolat de restul lumii, potrivit Maxi Sciences.

STATE AND SOCIETY ATTEOTIHUACAN

Between 100 BCE and 200 CE, the city of Teotihuacan grew rapidly, most of the Basin of Mexico population was relocated in the city, immense civic-religious structures were built, and symbolic and material evidence shows theearly importance of war. Rulers were probably able and powerful. Subse-quently the city did not grow, and government may have become more collec-tive, with significant constraints on rulers’ powers. 

A state religion centeredon war and fertility deities presumably served elite interests, but civic con-sciousness may also have been encouraged. A female goddess was important but probably not as pervasive as has been suggested. Political control probably did not extend beyond central Mexico, except perhaps for some outposts, andthe scale and significance of commerce are unclear. Teotihuacan’s prestige,however, spread widely in Mesoamerica, manifested especially in symbols of sacred war, used for their own ends by local elites.

So Far, No Life Found In Buried Antarctic Lake

Earlier this year, a team of Russian scientists completed a technological first – they successfully drilled to the surface of Antarctica’s Lake Vostok. The lake is buried under ice that’s over 2 and a half miles thick – meaning that any life that might still exist in the lake hasn’t been seen on the surface for thousands of years.

In February, when the drill reached the lake’s surface, the pressure differential caused water to shoot up close to 40 meters up the borehole. At that point, the water froze, and the team waited a few months to collect it. Now they have collected it – and the results are so far a disappointment.

Cracking The Code: The Decipherment Of Linear B

A conference in Cambridge earlier this month marked the 60th anniversary of the decipherment by Michael Ventris of Linear B, a script used for an early form of ancient Greek. His stunning achievement pushed back the frontiers of knowledge about the ancient world.

When during the early 20th century archaeologists excavated some of the most famous sites of Ancient Greece – notably Knossos on the island of Crete and Mycenae and Pylos on the mainland – they found large numbers of clay tablets inscribed with a type of script that baffled them. It was significantly different to any other script known at the time. Moreover, it was immediately clear that there were at least two variants of this type of writing.

Chichen Itza - O incursiune in istoria Mayasa

Desi nu este USA, poate fi considerata inca "Aventura Americana", de data asta tot pe continent, dar in Mexic unde mi-am petrecut o parte din scurta vacanta. Voi incepe seria povestilor in ordine inversa, asadar e randul uneia din cele 7 noi minuni ale lumii, Piramida de la Chichen Itza.

Inca o zi in care trezitul de dimineata m-a facut sa cred ca nu ma aflu in concediu...trebuia sa prind feryboat-ul de la ora 7 spre Playa del Carmen. Ziua avea sa ma poarte in istoria Mexicului si mai ales in cea a peninsulei Yucatan. Dupa 30 de minute pe ocean cu soarele zambind de dupa insula Cozumel pe care o lasam in urma, am poposit in Playa del Carmen.

Scientists ponder black hole behaviour

SCIENTISTS are a step closer to understanding how supermassive black holes behave after taking a photo of the phenomena, showing that it blasts a jet of material similar to a fighter jet's afterburner exhaust.

Curtin University researcher Leith Godfrey said the jets of material needed to be understood if scientists were to understand how galaxies formed and grew.