Agi: Perché a New York esce il fumo dai tombini

AGI - In passato gli abitanti di New York amavano dire che nel sottosuolo si ammassavano le persone per fumare di nascosto. E quella era la scherzosa spiegazione del fenomeno del fumo che esce dai tombini. In realtà dietro il grande “mistero” metropolitano si nasconde una spiegazione non conosciuta da molti newyorkesi: la Grande Mela è attraversata da una gigantesca rete sotterranea di teleriscaldamento a vapore.
È una delle più grandi al mondo: il vapore viene prodotto in centrali e inviato sotto le strade in tutta la città. Serve a riscaldare edifici, uffici, hotel e ospedali, e usato per l’acqua calda e, in alcuni casi, per la climatizzazione.

Perché esce dai tombini?
Piccole perdite o valvole di sfogo fanno uscire il vapore. Mentre i tubi bianco e rossi sistemati nelle aree di manutenzione servono a ridurre la pressione e a rendere il sistema più sicuro. Quando il vapore caldo incontra l’aria fredda, una costante negli inverni newyorkesi, ecco che allora si condensa e diventa visibile, creando quella nebbia che ormai fa parte del fascino della città.

Why does smoke come out of the manhole covers in New York?

AGI - In the past, residents of New York used to say that people crammed underground to smoke secretly. And that was the joking explanation for the phenomenon of smoke coming out of manholes. In reality, behind the great “mystery” of the metropolis, there hides an explanation unknown to many New Yorkers: The Big Apple is crossed by a gigantic underground network of steam-heated heating.

It is one of the largest in the world: steam is produced in power plants and sent underground throughout the city. It is used to heat buildings, offices, hotels and hospitals, and is used for hot water and, in some cases, for air conditioning.

Why does it come out of manholes?

Small leaks or pressure relief valves cause the steam to escape. While the white and red pipes located in maintenance areas serve to reduce pressure and make the system safer. When hot steam meets the cold air, a constant feature of New York winters, it then condenses and becomes visible, creating that fog that has now become part of the city’s charm.

#NewYork #NewYorkers

https://www.agi.it/estero/video/2026-04-03/new-york-fumo-tombini-36431780/

RaiNews: C'è anche De Niro alla manifestazione "No Kings" a New York

I newyorkesi hanno invaso le strade intorno a Times Square: una protesta contro il presidente Trump e le politiche della sua amministrazione. In prima fila anche l'attivista Al Sharpton

There was also De Niro at the "No Kings" demonstration in New York.

New Yorkers have invaded the streets around Times Square: a protest against President Trump and the policies of his administration. Activist Al Sharpton was also in the front row.

#DeNiro #the"NoKings #NewYork #NewYorkers #TimesSquare #Trump #AlSharpton

https://www.rainews.it/video/2026/03/robert-de-niro-alla-manifestazione-no-kings-a-new-york-fa8610cf-ea09-412b-a80b-eca643a21193.html

Agi: New York e l'incanto del lago ghiacciato

AGI - Quaranta giorni ghiacciato, un fenomeno che non accadeva a New York da decenni: è lo scenario suggestivo del Reservoir, il popolare lago interno a Central Park, che a distanza dalla prima ondata artica di gennaio, continua a mostrare uno scenario polare, mai visto prima. A migliaia, ogni giorno, i newyorkesi vanno a vedere il lago ghiacciato. Media locali fanno servizi e invitano a visitare il Reservoir, prima che lo strato di ghiaccio si rompa. Nonostante le temperature si siano alzate, non sembra deciso a cedere.

New York and the enchantment of the frozen lake.

AGI - Forty days frozen, a phenomenon that hadn't occurred in New York for decades: it’s the evocative setting of Reservoir, the popular inland lake in Central Park, which, since the first Arctic wave in January, continues to show a polar scene, never before seen. Thousands, every day, New Yorkers are going to see the frozen lake. Local media are doing reports and inviting visitors to see the Reservoir before the ice layer breaks. Despite the temperatures rising, it doesn't seem determined to yield.

#NewYork #Reservoir #CentralPark #first #Arctic #NewYorkers

https://www.agi.it/estero/video/2026-03-02/lago-ghiacciato-central-park-35903808/

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