Categoría Oddities

What is the Pinocchio paradox?

ILLUSTRATES Elias Fernandes QUESTION Franklin Chagas Damasceno, Cariacica, ES Paradoxes are apparently true statements that nevertheless contain a logical contradiction. The so-called Pinocchio paradox, specifically, is a variant of a more general one, that of the liar, which has driven…

How do fireflies emit light?

It’s all just a nice chemical trick. The oxygen that is inhaled by the firefly reacts with substances in its body and the result is the release of energy in the form of light. Scientists call this phenomenon bioluminescence and…

How does caries develop?

It is caused by bacteria that produce acids capable of corroding the tooth, forming a small hole. The development of decay takes from a few weeks to several months, but the pain only appears when the «digging» approaches the pulp…

What is the fastest growing plant?

(/) Bamboo is the champion. The record belongs to a gigantic species, Phyllostachys edulis. “In Japan, in 1956, scientists attested that this plant can grow up to 1.21 meters in a single day. Another species, Bambusa arundinacea, increased by 91.3…

What was sex like in the Middle Ages?

In the medieval era, life within four walls became more modest due to the influence of the Catholic Church. In the western world, everything related to sex – except procreation – became a sin. Even thinking about it was forbidden!…