The solar oven does not use gas, firewood or electricity: the heat that cooks the food comes directly from the sun, whose rays multiply when meeting the mirrored surfaces of the oven. Of course, despite reaching surprising temperatures, making it…

As the cart is not motorized, the entire movement of a roller coaster is almost exclusively the result of the action of the force of gravity. Therefore, the path of this exciting toy always has a huge descent that gives…

(Will Leite/Strange World) ILLUSTRATES will milk They were invented by English judge Ken Aston, a member of the FIFA Referees Committee, and created in 1970. Before the cards, when a player performed a penalty, the judge had to warn interpretively…

IMAGE Wikimedia Commons Because the color depended on the position of the plane in relation to the enemies. Ground attack or troop support planes flew close to the ground and were viewed from top to bottom by interceptor fighters, for…

First, a caveat: no single food is able to supply all our vitamin needs. “You can only get a complete diet by varying the foods in your diet”, says nutritionist Daniela Silveira, from Unifesp. But, so as not to leave…

ISLAM Alcoholic beverages are prohibited for worshipers and by civil laws in many Islamic territories. Also on the vetoed list are: pigs, dogs, seafood (except fish with scales and shrimp), monkeys, wild animals, birds of prey, reptiles, amphibians and insects.…

With a concept as simple as it is ingenious: measuring the shadow cast by the sun on poles. All at a time when common sense reigned over science, and nothing was more obvious than thinking that the Earth was flat.…

(Playback/Strange World) It was Cecopom (Military Police Communication Center) together with Telesp (Telecommunications of São Paulo), in 1981. There were already public utility numbers at the time, such as 102 (information service) and 130 (right time). Therefore, the “1” was…

The book Prisoners’ Inventions, written by inmate Angelo, details more than 50 inventions that make US prisoners more comfortable. Here in Brazil, it even goes as far as making cachaça in jail. Remember that the following descriptions are merely informative…

ATTENTION: CLICK ON THE IMAGES TO ENLARGE THEM ILLUSTRATES Paul Torino It was a citadel of the Inca Empire, which lasted from 1438 to 1533 and occupied, at its peak, an area from northern Chile to southern Colombia. Located 110…