Ecology

The polyurethane swimsuits (banned) that revolutionized swimming in two years: the era of "impossible" records

The polyurethane swimsuits (banned) that revolutionized swimming in two years: the era of “impossible” records

Perhaps not everyone knows that there have been polyurethane swimsuits for competitive swimming LZR Racerwhich they were bandits because they broke so many records that they were eventually considered “technological doping”. The story begins at the 2008 Beijing Olympics. The audience holds their breath, the swimmers are on the starting blocks, the race starts… and the scoreboard lights up: new ...

How the photocopier works, the invention that revolutionized offices around the world

How the photocopier works, the invention that revolutionized offices around the world

When you press the “Start” button on a copier, something surprisingly complex happens within seconds. Inside the machine, a physical and chemical process is activated based on the interaction between light, electric charges and matter: the xerographyinvention of 1938 Of Chester Carlsonwhich revolutionized the way documents are reproduced. In simple terms, a photocopier creates a perfect copy of an image ...

112-million-year-old amber discovered with a fossilized spiderweb inside: what it reveals

112-million-year-old amber discovered with a fossilized spiderweb inside: what it reveals

Rest of insect found in Ecuador in a fragment of amber from 112 million years ago. In Ecuador A deposit of fossil resins (amber) dating back to around 112 million years agoin the midst of the dinosaur era, containing insectstraces of plant and even one intact cobweb. It is the first deposit containing remains of arthropod species and pollen found ...

California High-Speed ​​Rail is the first high-speed rail network in the United States

California High-Speed ​​Rail is the first high-speed rail network in the United States

California High–Speed ​​Rail. Credit: Dllu, CC BY 4.0, via Wikimedia Commons There California High-Speed ​​Rail is an ambitious infrastructure project, consisting of the construction of first high-speed rail network in the USA. An ambitious project, full of engineering challenges, and which, like any mega project, has been the subject of much criticism. Let’s look at it more closely. The California ...

Because many Italian works of art are exhibited abroad

Because many Italian works of art are exhibited abroad

Paolo Veronese, Wedding at Cana; via Wikimedia Commons Traveling in Europe and around the world, especially in the United States, it is possible to appreciate many Italian works in non-Italian museums: it is the result of wars, raids, political agreements or illicit trafficking. Walking through the Prado, in Madrid, you will find works by Botticelli, Mantegna and Beato Angelico; at ...

Why the water of some fountains smells of sulfur: the scientific explanation

Why the water of some fountains smells of sulfur: the scientific explanation

Sometimes it can happen, especially in a small town or in spa areasto approach a water fountain and feel the typical “rotten egg” smell. That smell, pungent and generally unpleasant, is not the result of poor maintenance, but of a real natural phenomenon: the presence of sulfur compounds, that is, sulphur-based, dissolved in water. In particular, the main person responsible ...

How AI detectors work and how to best use them: what is an AI text detector

How AI detectors work and how to best use them: what is an AI text detector

The “AI text detector”, or AI-generated text detectors, are software that analyzes the style, structure and words used to estimate the chance that a text was written by aartificial intelligence. The problem, however, is that AI is also improving quickly. Tools like ChatGPT are now capable of writing in a natural and realistic way, so much so that distinguishing between ...

The 4 main gold mines in Italy, from Piedmont to Sardinia

The 4 main gold mines in Italy, from Piedmont to Sardinia

In Italy they existed 51 gold mines: the 4 main ones were located in Piedmont (Pestarena, Guia), Aosta Valley (Chamousira) e Sardinia (Furtei). Gold has no longer been mined in Italy since 2009, but the most productive mines reached considerable levels, extracting up to 580 kg of pure gold per year. The period of maximum extraction was between XVIII and ...

Are the surfaces becoming uniform in tennis to favor Sinner and Alcaraz? Science's answer

Are the surfaces becoming uniform in tennis to favor Sinner and Alcaraz? Science’s answer

Carlos Alcaraz and Jannik Sinner at Roland Garros. Twitter The words of the tennis legend have caused quite a bit of controversy, Roger Federerduring an interview on the podcast Served by Andy Roddick. The Swiss, who has been retired for three years now, speaking about the Sinner-Alcaraz duopoly that is dominating world tennis, offered his point of view on the ...

What does “extra virgin olive oil” mean and why does it have a higher quality

What does “extra virgin olive oil” mean and why does it have a higher quality

THE’extra virgin olive oil it is considered of the highest quality according to precise standards established by the COIi.e. the International Olive Council and adopted by the European Union through the EU Regulation 2022/2104. These requirements to be met include both the manufacturing process to produce the oil, which must include exclusively cold mechanical processes, such as squeezing, and the ...