»> It was inspired by the American expression yellow press (“yellow journalism”), which emerged at the end of the 19th century from the competition between the newspapers New York World and The New York Journal. They had gone to war…
In 1861, by Scottish physicist James Clerk Maxwell and his assistant Thomas Sutton. Maxwell conducted studies on how the human eye perceives colors. Based on them, he used the existing techniques of black and white photography to take three identical…
»> It is a vulture found in the plains and deserts of the African continent, in a vast area bounded by countries such as Eritrea, Sudan, Tanzania and Guinea. It goes by the scientific name of Gyps rueppellii and has…
Platinum, gold, palladium, iridium and silver. “They are considered precious because they are rare in nature and do not oxidize, that is, they do not deteriorate”, explains engineer Claudemiro Bolfarini, from the Federal University of São Carlos. The main reason…
– (Éber Evangelista/) ILLUSTRATES Eber Evangelista INTERNAL LAYER As they were in direct friction with the body, the “underwear” and the “shirt” were made of linen or cotton (the same material was also used in a kind of cap tied…
First, it is worth defining the difference between them. “Fluids are those substances that are permanently in the body and whose production does not depend on external stimuli”, says biologist Silvia Cristina Ribeiro de Souza, from the University of São…
ILLUSTRATES Tila BarrionuevoEDITION Felipe van Deursen – (Tila Barrionuevo/) It is a gigantic magnetic distortion created by the Earth’s core, which works like a magnet. The core is divided into two parts, the inner part, formed by iron, nickel and…
Nobody knows for sure. The two space agencies that want to take humans to the red planet – NASA, from the United States, and ESA, from 17 European countries – are still looking for answers to the problems of returning.…
– (Rodrigo Urbano/) SUGGESTION Leticia Cangane, Sao Bernardo do Campo, SP CRIMINAL RECORDName Dimitri Baksheev (1982) and Natalia Baksheeva (1975)place of business Krasnodar, southern Russiadeaths 30 1) Natalia Baksheeva was a nurse at the Krasnodar Air Force Academy. She and…
Reader’s question – Victor, Taguatinga, DF There are several types. But they are all for specific cases: in general, giraffes are quite silent animals. For a long time it was even thought that they were mute, since the sound emitted…