The book “Elektroschutz in 132 Bildern” (Electrical Protection in 132 Pictures) was published in Vienna in the early 1900s by a Viennese physician named Stefan Jellinek (1878-1968, a founder of the Electro-Pathological Museum). The pictures are nice and direct and unambiguous; they teach, graphically, that the surest way to kill yourself with electricity is to form a complete path from source (usually the bright red arrow) to ground (the screened back, pink arrow). Arrowheads provide the path for current flow. (Photo by The Vienna Technical Museum)

“Mountain Goats, Colorado”. A herd of mountain goats huddle together on top of Mount Evans, Colorado during a lightning storm. This photo was selected out of more than 5,000 entries to go on display in “Wilderness Forever: 50 Years of Protecting America’s Wild Places”, a new photo exhibition at the Smithsonian’s National Museum of Natural History, which will run through summer 2015. (Photo by Verdon Tomajko/Smithsonian Wilderness Forever Photo Contest)

Mrs. Marie Graskamp of Milwaukee shows the different positions one might assume when entering the bomb shelter in Milwaukee September 3, 1958. This circular entrance is about three feet in diameter. This is the entrance (according to the builders) that would connect to the cellar of a home assuming the shelter was in the ground for added protection. If a bombing should occur, all members of family would proceed to the cellar and then through the circular port into the shelter. (Photo by AP Photo)

A Nepalese girl in traditional attire takes part in Kumari Puja, a mass worship ceremony for preteen girls, in Kathmandu, Nepal on September 27, 2023. In Nepal, Kumari Puja is the tradition of selecting a Kumari, usually a preadolescent girl, to worship symbolically as a goddess. More than hundred girls under the age of nine from across the country gathered for the mass worship. Performing Kumari Puja for three continuous years is believed to protect the girls from diseases throughout their entire life. (Photo by Narendra Shrestha/EPA/EFE)

It's not often that two ferocious tigers have to beat a hasty retreat from a confrontation. But it seems that the wrath of a mother bear protecting two cubs on her back was more than enough to scare this pair off. Wildlife photographer Aditya Singh captured the encounter during a visit to Ranthambore Tiger Reserve in Rajasthan, India.

“Meet the woman dispelling the myths about one of the worlds most feared ocean predators by swimming without protection with great white sharks. Petite beauty Ocean Ramsey travels the globe swimming with many species of sharks hoping to prove they are nothing like their Jaws film reputation”. – Caters News. Photo: Ocean Ramsey freediving with a shark. (Photo by Juan Oliphant/Caters News)

RAF Tornados fly above the Lossiemouth air base on March 18, 2011 in Lossiemouth, Scotland. UK defence forces will help to enforce a no-fly zone over Libya after the UN voted in favour of a resolution that backed 'all necessary measures', except a foreign occupation force, to protect Libyan civilians.

Protester Nadine Wolf demonstrates against the proposed Stop Online Piracy Act (SOPA) and Protect IP Act (PIPA) outside the offices of U.S. Sen. Charles Schumer (D-NY) and U.S. Sen. Kirsten Gillibrand (D-NY) on January 18, 2012 in New York City. (Photo by Mario Tama/Getty Images)