1- To understand how the various types of anesthesia work, it is first necessary to understand how pain is transmitted. It is a sign that there is something wrong with a part of the body. And that signal travels from…

ILLUSTRATIONS Felipe Watanabe Two brothers were blamed for the bombs that exploded at that event, on April 15, 2013. But not everyone believes this explanation… 0 – open 1) Above reproach Photos from moments before and after the explosions show…

»> Dogs have seven main blood types, which make up the so-called DEA System (Dog Erythrocyte Antigen). They are: DEA 1, divided into subtypes DEA 1.1, 1.2 and 1.3, DEA 3, DEA 4, DEA 5 and DEA 7. The DEA…

Although many people get confused, these two insects are quite different, both in their habits and in the details of their anatomy. Stilts are larger than blackflies, which look like tiny flies. Pernilongo, by the way, is the popular name…

A professional athlete runs between 9 and 11 kilometers during the 90 minutes of a football match. These numbers, published in scientific studies by physiologist Turíbio Leite de Barros, from Unifesp and São Paulo Futebol Clube, match the distances covered…

In atoms, the electrons and the nucleus are always in a rotational movement called spin. If they rotate in different directions, one movement offsets the other and there is no magnetism. This is what happens in most materials. In magnets,…

This is the name of the train that runs between the Bolivian cities of Puerto Quijarro, on the border with Brazil, and Santa Cruz de la Sierra. A kind of initiation rite for every self-respecting backpacker, the train covers part…

(MTV/Playback) Daria, the famous protagonist of the MTV animated series that became cult in the 90s, is going to return to TV. According to Variety magazine, a new division of the young channel, called MTV Studios will produce a new…

(/) QUESTION Vinicius Rodrigues, Florianopolis, SC Although it is difficult to determine an exact number, it is known that it occurred about 60 million years ago, in the period known as the Upper Tertiary of the Cenozoic Era. The ice…

ILLUSTRATIONS: Alexandre Jubran No, he didn’t come from the wolf! Check the cladogram of canis familiaris and learn how a prehistoric creature became your best friend. But beware: the evolutionary tree of dogs is still very inexact. This flowchart brings…