For decades, New York has been associated with skyscrapers, traffic and tightly packed neighbourhoods rather than large-scale environmental restoration. Yet across the city’s streets, parks and residential areas, an enormous change has been taking place almost unnoticed. Trees planted years ago are now reaching maturity, casting wider shade over pavements, cooling busy roads and gradually…

1958, the US secretly detonated 3 nuclear devices In August and September 1958, the United States military carried out a secret series of high-altitude nuclear tests in the remote upper reaches of the South Atlantic Ocean. Code-named Operation Argus, the operation involved launching three low-yield nuclear devices between 100 and 500 kilometres into space. The…