Gas-masked men of the British Machine Gun Corps with a Vickers machine gun during the first battle of the Somme, 1916. (Photo by General Photographic Agency/Getty Images)

It is amazing how much the humanity can change the face of the earth. Not only can it create huge craters, which look a lot like craters from meteors, they leave a big enough impact that it can be seen from space. Though this crater, caused by a massive explosion on 1 July 1916, looks large, being 90 feet deep and 300 feet across; it is nowhere big enough to be viewed for space. A common misconception is that the Great Wall of China can be seen from space. In reality, however, it is impossible. Not only is it of the same color as the earth near it, it is also not that wide. Deforestation, on the other hand, can be clearly seen from space. Also, at night, all the lights that the large cities produce are also very visible.

These images, scanned from old glass negatives which had surfaced in northern France, were believed to have been taken by a local amateur photographer in 1916. They showed British and a few Australian soldiers, in formal or informal poses, during or just before the most murderous battle in the history of the British Empire – Battle of the Somme. Who are these British and British Empire soldiers? The identity of the soldiers is, and may always remain, a mystery... (Property of Bernard Gardin/Dominique Zanardi/Joel Scribe/The Independent Magazine)

A woman in yukata, casual summer kimono, poses for a photo at Fushimi Inari Taisha in Kyoto, Japan on October 2, 2019. (Photo by Matthew Childs/Reuters)

A woman at Foyles bookshop looks at a copy of J. K. Rowling's latest novel “The Casual Vacancy” which has gone on sale today starting at 8:00 am on September 27, 2012 in London, England. “The Casual Vacancy” is J. K. Rowling's first book aimed at an adult readership and is centered on a parish council election in a small West Country town. (Photo by Oli Scarf)

Students from Glasgow Art School modelling casual clothing and Buchan tartan in the annual Fashion Show for charities. During Rag Week students parade in the city streets wearing costumes designed and made by themselves. (Photo by Haywood Magee/Picture Post/Getty Images). 7th February 1953

Women in yukatas, or casual summer kimonos, take their selfie in front of paper lanterns during the annual Mitama Festival at the Yasukuni Shrine, where more than 2.4 million war dead are enshrined, in Tokyo, Japan July 13, 2017. (Photo by Kim Kyung-Hoon/Reuters)

In this November 9, 2014 photo, a man sits on the rope holding his bull by the neck as he waits to enter it in a bull fight in Leogane, Haiti. The obscure Haitian practice of fighting bulls is brutal like a cock or dog fight, but on a larger scale. A casual pastime for some rural men, it is serious business for others looking to pay their children's school fees or even buy a car. (Photo by Dieu Nalio Chery/AP Photo)