Ecology

come si lavavano in antichita senza bagni e acqua corrente

How did people wash themselves in ancient times? The history of hygiene from the Egyptians to the Renaissance

Throughout history the hygiene habits of humanity have changed profoundly, due to new scientific discoveries and inventionsbut above all of cultural context. We don’t know exactly when the man began to wash himself, but it is probable that this happened since Prehistoryin relation to innate sense of hygiene that many mammals (like us) possess. With the transition from a hunter/gatherer ...

piste da sci

Blue, red and black: how ski slopes are classified based on slope

How they come classified the ski slopes? This is a question that every novice skier has asked themselves at least once in their life. The answer is quite simple and is based on one three-color classification (blue, red, black) linked to average slope of the slopeboth longitudinal and transversal. Generally, the blue slopes are the easiest, the red ones have ...

Fa male trattenere uno starnuto

Does holding a sneeze hurt? Yes, it can cause vascular lesions and thoracic fractures

The sneezing is an innate reflex which consists of the very rapid expulsion of air from the lungs through the nose and mouth. It is a defense reflex that clears the airways from foreign bodies such as dust and allergens. When we hold it, however, the air that would normally be expelled from the nose can accumulate causing damage. In ...

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The first smartphone in history was born in 1992 and weighed 510 grams: the IBM Simon

IBM Simon THE’IBM Simonintroduced to the world in November 1992 at Comdex in Las Vegas and launched on the market in 1994 distributed by BellSouth, is universally regarded the first smartphone in historyeven though this term, “smartphone”, was coined only a few years later (in 1997 to be exact) from Ericsson with his CR 88 (Penelope). Simon will represent a ...

perche cinesi scrivono in verticale da alto in basso

Why was traditional Chinese writing vertical?

There Chinese writing traditional stands out for its style vertical writingin columns from top to bottom. This practice, which may appear unusual for those accustomed to horizontal writing, has its roots in history, culture and the materials used by the Chinese over the centuries. In short, its invention is attributed to a legendary Chinese minister, such Cang Jiealthough it probably ...

tipi di eruzione vulcanica

Volcanic eruptions: how are they classified? The different types explained in detail

You’re watching Beautiful Volcanoes Don’t miss out on more content from Geopop The volcanic eruptions are complex natural phenomena that consist of escape of molten rock and gas from the earth’s surface. We usually talk about “magma” if the molten rock is inside the earth’s crust and is mixed with gases; it is called “lava” when this is expelled to ...

perche si dice fare un quarantotto

Why do we say “do a forty-eight” to indicate a chaotic and revolutionary situation?

“Making a Forty-Eight” it means creating so much disruption that you question everything. The idiom refers to the 1848when Italy and Europe were shocked by a series of revolutionary movements and riots which undermined the established order. But what is meant more precisely when we say “do a forty-eight”? And why exactly this number and year was associated with the ...

ponte messina aggiornamenti nov 2024

Bridge over the Strait, green light from the Technical Commission on the environmental compatibility of the project

Credit: CGioco. News on the development front Messina Strait Bridge projectthe infrastructure that will make it possible to obtain a stable connection between Reggio Calabria and Sicily: the Technical Commission for Environmental Impact Assessment has given the green light to the project regarding its environmental compatibility, with additions, regarding aspects related to realization of the work. The authorization from Cipess ...

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The “drafts” function arrives on WhatsApp to find written and unsent messages: how it works

WhatsApp introduced a new feature called Draft messagesdesigned to simplify the management of interrupted conversations. This novelty is designed not to lose incomplete and unsent messages. Every time you start writing a text without sending it, the app will automatically save it, highlighting it with the green writing “Draft”visible both in the specific chat and in the main conversation list, ...

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The last “supermoon” of 2024 arrives tonight, what time and how to see the full moon of November

Credit: Ulrike Eisenmann, CC BY 3.0 Friday November 15, 2024 we will witness thelast of four consecutive “supermoons”the so-called “super beaver moon”. This will also be thelast “Supermoon” of the yearmaking the Moon appear full for about three days, from Friday to Sunday. The event will be particularly spectacular as the Moon will be ideally escorted by Jupiter and the ...