BUILD YOUR OWN CAR Using a carcass sold at a bargain price and scrap metal parts, a group of 15 high school students in Philadelphia (USA) built a vehicle powered by biodiesel for an automobile contest. The team didn’t take…
»> The most common reasons are cold and fear. “We get goosebumps because our hairs are raised by the action of tiny muscles in the skin. These muscles come into action under the command of certain parts of the brain,…
To go up and stay suspended in the sky, the airship relies on helium gas, which is lighter than air; already in the forward displacement, motorized propellers come into action. This is basically how this strange vehicle, which appeared in…
»> It is a literal translation of the English honeymoon. In Ireland, newlyweds had the custom of having a low-alcohol drink called mead – or mead -, basically composed of fermented honey and water. The potion was supposed to be…
(Andrey Zhuravlev/iStock) There are five different processes. They all start with the same step: pouring the coffee beans into hot water to soften them, then soaking them in a solvent. One of the more traditional methods uses methylene chloride, a…
Reader Question – Samuel Nakahara, Sao Bernardo do Campo, SP Relating the trade to those who drive poorly has to do with the multiple functions carried out by barbers until the end of the 19th century. At that time, both…
Everyone knows that white light, emitted by the Sun, is actually composed of seven basic colors. They range from violet to red, each with its own frequency. The air molecules that make up the Earth’s atmosphere, in turn, reflect, absorb,…
It is a guerrilla that was born in the state of Chiapas, in southern Mexico. Its name is a tribute to the revolutionary Emiliano Zapata (1879-1919), who led a struggle for land reform in the country at the beginning of…
(/) There were actually two: Human Torch and Namor, the Sub-Mariner. Both were created in 1939, when the publisher was still called Timely Comics. They debuted in the company’s first magazine, the Marvel Comics #1. Some consider Dating the first…
There are two main types of offshore oil rigs: drilling and production. Those in the first group serve to find oil in wells that have not yet been explored, a task that is not easy, which begins with a series…