After the first World War, Australia had to take part in the Great Emu War.

The Great Emu War was the first and perhaps only inter-species war of the 20th century. In 1932, there was great public concern over the number of emus said to be running amok and often destroying farmer's crops in the Campion district of Western Australia.

The attempts to curb the population of emus (which are large, flightless, rather ridiculous looking birds indigenous to Australia) involved soldiers armed with machine guns.

In the soldier's first attempts, around 50 emus were killed and they suffered no casualties. In their second attempt, 986 birds were killed with 9,860 rounds and 2,500 birds were wounded and died as a result of their injuries.

By December of that year, the Emu War had reached Great Britain where some people sided with the soldiers and farmers, while others sided with the emus. Conservationists protested the initiative as "extermination of the rare emu."

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In 1518, many people died from extensive dancing.

This really gives "dance like there's no tomorrow" a new meaning. The Dance Plague of 1518 broke in July of that year, when a woman, Frau Troffea, began to dance fervantly in a street in Strasbourg, Alsace (then part of the Roman Empire). Within a week, 34 others had joined, and within a month, there were around 400 dancers dancing on the same street.

Numerous people took to dancing for days without rest. Over a period of a month, people were literally dropping dead from heart attack, stroke, or exhaustion but the deadly dance party continued on. As the Dance Plague worsened, concerned nobles sought the advice of local physicians who told them that the plague was a "natural disease" caused by "hot blood."

Rather than prescribing bleeding, the authorities encouraged more dancing, even built a wooden stage for the dancers and hired musicians, because they believed that the dancers would only recover if they got their sick moves out of their system.

To this day, it is not known why exactly everyone was dancing.

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Picher, Oklahoma is considered the most toxic place in the United States.

The town of Picher, Oklahoma has been ravaged by industrial mining; so much so that a majority of it's inhabitants have fled and it's current population is 20. According to the Environmental Protection Agency, the little town is the most toxic region in all of the United States.

There have been numerous reports of sinkholes appearing overnight as mine shafts collapse. Often, underground water, highly acidic and concentrated with heavy metals, come bubbling into these sinks and turns them into toxic ponds.

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Skim milk can actually be really bad for heart.

Skim milk is treated like elixir by the health conscious. It seems the the flawless beverage, allowing you to get all the vitamins found from milk out fat. However, as it turns out, more and more researchers are coming to the conclusion that skim milk is not nearly as good for you as it's full fat counterpart.

The reason behind this is that when the fat is removed from milk, many important vitamins are removed with it, and thus need to be replaced with synthetics. Many manufacturers also "fortify" they skim milk, using a powdered version of milk that can actually serve to oxidize the cholesterol contained in milk.

While this has not be tested in humans, animals that drank oxidized cholesterol were more likely to develop heart disease. So while it may cost you a couple pounds, you may be much better drinking full fat milk.

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Hydrogen in Saturn gets so dense towards the core that it turns into metal.

It's sometime hard to believe that the same elements that exist on our little blue home are also present in the giant, magestic, cosmic beast that is Saturn.

Saturn is classified as a gas giant because the exterior is predominately composed of gas and lacks a definite surface. However, it does have a solid core.

The planet primarily consists of hydrogen. The density of the hydrogen reached at the radius is 99.9% of Saturn's mass. The temperature, pressure, and desnity inside the planet all rise steadily towards the core which, in the deeper layers of the planet, cause hydrogen to morph into a metal.

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