A Vietcong operating room in the Vietnam War, 1970

Photograph of Sir Winston Churchill of the British Empire and Kaiser Wilhelm II. Of the German Empire. Kaiser displays German military Exercises to the then. Parliamentarian and military Major of Britan in 1909

The 178 year old preserved head of Portuguese serial killer Diogo Alvarez

https://www.psychologytoday.com/ca/blog/the-scientific-fundamentalist/200811/the-power-female-choice-fat-chicks-get-laid-more

Very interesting article.
Apparently overweight women have more sex than their counterparts and that's is the explanation: "overweight and obese women could not possibly have as much sex as normal-weight women, let alone more sex, if men decide when and with whom to have sex. Most men would simply not choose overweight and obese women as their preferred sexual partners. Overweight and obese women can have more sex than normal-weight women only if women decide when and with whom to have sex, and men have little say in the matter."

Jellyfish sucked into ring vortex

This is how fast Orcas swim, catching up with a motorboat.

Drop of water falling on a sharp point

Whales have human-like fingers underneath their flippers