Men stage an attack during a training session for the Olympic Torch Security Team who will be protecting the torch bearers and Olympic flame during the torch relay's progress through the UK, at the Metropolitan Police Training School on March 9, 2012 in London, England. (Photo by Lewis Whyld – WPA Pool /Getty Images)

Television actress Catherine Fuller visits Trafalgar Square in London and feeds the famous pigeons. (Photo by Harry Kerr/BIPs/Getty Images). 26th June 1956

Two sailors from HMS Fury enjoy a smoke with two women in bathing suits on a beach in Jersey, where their ship is on a visit. (Photo by William Vanderson/Fox Photos/Getty Images). 29th June 1935

“Contrails (short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals”. – Wikipedia

Photo: An airplane leaves a vapor trail as it flies in front of he moon on January 17, 2007 above Hanover, Germany. (Photo by Alexander Hassenstein/Getty Images)

A man shows golf ball-size hail outside Parliament House after a severe hail storm hit Canberra, Australia, 20 January 2020. (Photo by Mick Tsikas/EPA/EFE)

Aymara indigenous people celebrate the “Roscasiri”, the change of command of local authorities, in Pomata District, one of seven districts of the Chucuito Province in the Puno Region, southern Peru, on January 1, 2022. This ancient Aymara event, in which people adorn themselves with breads and fruits that represent abundance for the new year, celebrates the change of command of local authorities. (Photo by Carlos Mamani/AFP Photo)

Bystanders look on as workers arrange silver blue fabric, part of the process of wrapping L'Arc de Triomphe in Paris on September 13, 2021, designed by the late artist Christo. Work has begun on wrapping the Arc de Triomphe in Paris in silvery-blue fabric as a posthumous tribute to the artist Christo, who had dreamt of the project for decades. Bulgarian-born Christo, a longtime Paris resident, had plans for sheathing the imposing war memorial at the top of the Champs-Elysees while renting an apartment near it in the 1960s (Photo by Geoffroy Van der Hasselt/AFP Photo)

Local boy Faddei plays in a destroyed Russian military truck in the village of Kolychivka, in Chernihiv region, Ukraine on April 27, 2022. (Photo by Vladyslav Musiienko/Reuters)