In theory, eggs with two yolks could generate two chicks, but what is seen in practice is that neither survives. This happens because the air chamber inside the egg – essential for completing the chicks’ lung cycle – is too…

If a radioactive leak is suspected, a plan is put into action to lessen the effects of the possible accident. To determine the scope of the emergency measures, the area around the plants was divided into safety zones, which take…

It is the Seikan Tunnel, which is in Japan and reaches 53.8 kilometers in length. It is closely followed by the much more famous Eurotunnel, which connects France and England under the English Channel. But the classification of the largest…

They were underground galleries explored in the 18th and 19th centuries to supply the nascent English industry. Extracting about 100 million tons of coal per year, England exchanged human effort for locomotives, looms and spinning machines, driving the Industrial Revolution.…

In their 30 days of life, flies go through a major metamorphosis from egg to adult form as they fly around, stopping to eat feces or garbage every now and then. They are part of the order Diptera (which means…

»> They just want to protect themselves. The closing of the leaves is a natural defense in reaction to any kind of touch, perceived by the plant as a potential attack. “If a predator touches these leaves, he will move…

WEIGHT WATCHERS You don’t have to be fat, or Japanese, to be one of the 800 professional fighters in Japan. But you can’t be skinny either: rookies need to weigh at least 75 kilos, be 23 years old or less…

Grafting is the union of tissue from two different plants and can be done in several ways. There are two main uses. One of them is when the soil has bacteria and fungi, and only the rootstock resists pests, and…

This fighting style for conflict situations was created in the 1940s to train a rebel Jewish army – the Haganah. With the independence of the State of Israel, in 1949, the creator of the technique, the Hungarian Imi Lichtenfeld (1910-1998),…

ILLUSTRATIONS Alonso Feliciano 10. HE GIVES THE BLOOD CONSTRUCTIONS Blood Piss Blues (2010) ARTIST Vinicius Quesada Born in São Paulo, the artist mixes his blood and urine with paint to make collages and paintings. Blood is used in all colors,…