»> Because that way they save energy. The strategy is very smart and produces a fundamental economy for migratory birds that need to travel long distances. This is a question of aerodynamics: when the bird at the head of the…
– (Yusuf IJsseldijk/Wikimedia Commons) ZERO HANDIn the village of Trunyan, descendants of the Bali Aga ethnic group do not bury their dead: they simply place them to decompose at the foot of banyan trees, trees considered sacred. Then the bones…
Extremely uncomfortable, unhealthy and dangerous. On average, for every three ships that left Portugal in the 16th and 17th centuries, one sank. About 40% of the crew died on the voyages, victims not only of shipwrecks, but also of pirate…
(/) Because more than a quarter of the country is below sea level. And why wouldn’t it then be the Netherlands, in the singular? Is that the Netherlands is divided into 12 provinces, which would be such countries, in the…
(/) This substance, used by the police to detect traces of blood, causes a reaction called chemiluminescence. Roughly speaking, this “swear word” describes a chemical reaction that releases energy in the form of light. Luminol is a powder – made…
– (Pablo Mayer) ILLUSTRATES Pablo Mayer The expression “four corners of the planet” has no origin in geometric logic (considering as “corner” any intersection between two straight lines, as a corner). It is believed, in fact, that it is a…
Long before Facebook… Long before Twitter… there was it. The social network you left O Brazilian addicted to social networks. O orkut! Created in January 2004 by a Google engineer, O Turkish orkut Büyükkökten, O site would only accept a…
The first official description of a system of shoe sizes was published in England in 1688. in the manual The Academy of Armory and Blazon, around this time, Randle Holme mentions an agreement between shoemakers to use a quarter-inch (0.635…
When they invented the clock, how did they know what time it was? Rafael Fernandes Junqueira, Mirassol D’Oeste, MT In fact, our ancestors knew the time of day long before the clock was invented. The mechanical clock is an invention…
Yes it is true. Incidentally, not only the heart but also practically the entire digestive system of this crustacean is located in the head. “The hepatopancreas is a glandular system that has liver, pancreas and stomach functions. It is located…