The human nose able to kiss trillions of scent

Human nose turns out to have the ability to distinguish smells one trillion, far more than previous estimates.

For decades, scientists thought the human nose can only distinguish 10,000 smells. Before, they put the sense of smell is "lower" than the senses of sight and hearing.

"Our analysis shows the human ability to distinguish smells a lot bigger than I ever expected," said research co-author who is also the head of the laboratory of Rockefeller University Leslie Vosshall Neurogenetika was quoted as saying the AFP from the journal Science.

According to the researchers on the team, the information that the human nose — with the help of 400 receptors — only can distinguish 10,000 smells appeared in 1920 without the support of the data.

The researchers indeed have researched receptor with three eyes that can distinguish several million colors and the ear can sort out 340 000 votes. "To smell, no one was (previously) had time to test it," said Vosshall.

Vosshall and research fellows involved 26 people and a mixture of odors from 128 different molecules that can evoke the scent of citrus, grass, and a variety of chemicals. The Bebauan is divided into 30 groups.

"We don't want to bebauan it was recognized explicitly so most mix it (smelling) are weird and bad," said Vosshall. "We want the respondent noticed that ' this is the thing that is really complex and are able to choose one of them to the different ' says," he said.

Each respondent will try three bottles of scent from time to time, with two bottles of the same flavorful, while a different scents to see whether the respondents are able to differentiate the smell-the smell of it. There are 264 experiment carried the respondents.

The researchers then model a combination of smell that humans can recognize based on average smell that can be recognized in the experiment. The combination of 128 scent samples get results estimates about one trillion smell should be known to the human sense of smell.

Lead researcher, Andreas Keller, also from Rockefeller University, says, this number was almost certainly still too little. The reason, many mixing scents of others in the real world.

According to Keller, the ancestors of humans rely on their sense of smell. However, individual hygiene and refrigrasi make the scent recognition capabilities declined during the modern era.

"This explains our attitude that holds (the ability) to smell not important compared to hearing and vision," said Keller. In fact, previous researchers had known that the sense of smell is closely related to human behavior, explains how the human brain processes information that is complex.

Mini T Rex fossil Found in the Arctic

Palaentologi experts have found the remains of a fossil Tyrannosaurus rex (t. rex) runt in Northern Alaska. These prehistoric creatures that live in the Arctic, about 70 million years ago, during the Cretaceous period, half-sized cousin feared. Named Nanuqsaurus, or ' lizards ' polar bears in Alaska's Inupiat language, this being an estimated six meters in length and weighs 450 pounds when he was an adult. Experts say, the mini T rex is very similar to the nearby cousin, a giant tyrannosaur, which doubled the size of Nanuqsaurus.

Part of the skull and upper and lower molars of T rex the runt that was discovered by the paleontologist from Museum Perot in Dallas, Texas, in the southeastern part of the United States. They found it while digging up skeletal remains of small horned dinosaur unknown to others. Anthony Fiorillo found bones in a Nanuqsaurus extracting at Prince Creek Formation on the North Slope, Alaska, above the Arctic circle. The invention is not too shocking for the paleontologist because they have suspect there is the presence of a predator in the Arctic thanks to former horned dinosaur bone in the teeth.

What kind of Mask is the oldest in the world?

Claimed as the oldest mask in the world (' the oldest masks in the world '), which is 9,000 years old mask found on the Duma Horvat in Judean Hills, Israel, now the museum's collections. Researchers said the stone mask, revealing a terrible ' similarities ' with a human face. Before it is stored in the display Glass Museum Israel in Jerusalem, some curators have done a comparative study of this mask. With a stiff smile, and a huge hole on the part of the eye, these artifacts represent the ancestral spirits of the dead. This mask may be used during the ceremony and ritual of the stone age.

' Eye-hole allows for a broad view of the various field of vision, as well as the proportion that is very fitting for the contours of a human face, '' said a curator, Debby Hershman. There is also a hole in the edge on some of the ancient mask. According to the researchers, the possibility of use for attached or mounted on the face. In addition, it can also be carved holes to put the hair to make the mask looks more human, or utilized for the rope that could tie the mask to the pillar, as well as other structures.

The ancient city of petra built parallel the sun

A building ancient civilizations such as cities carved in stone, petra the infamous, made in such so that the sun will illuminating places petra, metropolis giant contains tombs, a monument, and with religious other complicated carved on cliffs stone, was capital of the royal nabatea.Culture middle east that are still a few understood this master most of the jordan modern from the 3rd century bc to ad first century.

The traders spices prosperous worshiping the sun, among other deities, and may have stressed the importance of the equator ( the point of the sun that divides day and night are of equal length ), the turning point of the sun, and other astronomical events are determined by how the sun moves across the sky.The turning point of the sun, for example, is the result of a north-south axis across the earth relatively sideling 23.5 degrees to the plane of our solar system.The slope of this is the cause of differences in the number of rays of the sun which reached different parts of the planet earth for a year around the sun

Now, statistical analysis published in the Nexus Network Journal reveals, that the celestial phenomenon is likely to affect how the Nabataeans created Petra, in the order of words in the language of Greece which means rock. ' The front of Petra is not only beautiful, but also shows something else, ' said research team leader Juan Antonio Belmonte, astronomer of the archeological Institute of Astrophysics of the Canary Islands