The number of indigenous people within Brazil fell from 6 million in the 1500s to 100,000 in the 1950s.

The roughly 2000 nations of mostly semi-nomadic native tribes of pre-Columbian era Brazil steadily disappeared after the arrival of European settlers. Millions died from disease, war, and slavery over the centuries. Many others were assimilated into the Brazilian population. Today, the Brazilian indigenous population is on a slow rebound after an all-time low population of around 100,000 in the 1950s. There are now around 735,000 indigenous people living in 24 of the 27 states in Brazil. Among them there are 235 different ethnicities speaking over 170 unique languages.

You can learn more about the indigenous people of Brazil at the Society for Threatened People's website.

Lighting is hotter than the surface of the sun!

Lightning can be up to 18,000 degrees Fahrenheit, which is almost twice the surface temperature of the sun! If lightning is so hot, why is it that we get our energy from the sun?

Although lightning is blistering, its radiant energy pales in comparison with the sun’s. While it’s true that lightning can set a tree on fire, the distance to its target must be very small for it to feel the full heat of lightning. The sun’s core however is close to 15 million degrees Fahrenheit!

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Someone calculated pi to 2.7 trillion digits!

The mathematical constant pi, more often referred to as the Greek letter π, is the ratio of any circle to its diameter, and has an infinite amount of numbers. Usually written as simply 3.14, it has now been calculated to its 2.7th trillion digit!

The 2.7 trillion digits is 123 billion more digits than the previous record. The prior record had been calculated on a super computer, but Fabrice Bellard, who calculated the digits, says he used a very simple method and common computer. Bellard says that although it was fun to break the record, finding pi was simply a way to test his method to see if it could be used for other mathematical purposes.

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An entire movie was shot in Disney World without Disney knowing about it!

"Escape from Tomorrow" is a low-budget, black and white indie flick. It takes place entirely inside Disney World. In the surreal fantasy film, one of the characters loses his sanity after riding It's a Small World (more like reality, no?). Later, he is tasered and held inside Spaceship Earth.

What's really interesting about the film is that Disney did not know that it was being shot. It was secretly shot after the director bought tickets for everyone and filmed the actors at the theme park. Some say that actors read their scripts from their cellphones.

Check out more info on this film by reading the source.

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Contaminated pork meat in China glows blue in the dark!

The meat was still edible and called 'avatar-meat'! A family in China bought some pork at the local market to make dinner with it. They set the leftover pork on the table and went to bed. Later that night, the mother got out of bed to use the restroom and saw the meat glowing blue on the table.

In the morning, the pork appeared normal again. A reporter came over and examined the pork and called some food experts who had no idea what was going on.

Someone who touched the pork could be seen with a light blue glow on their own hands, too. The Changsha Food Safety Commission mobilized the efforts of the business, livestock, industry and commerce, health, and other departments and at the same time invited experts and professors to participate in the investigation.

Through scientific bacteria cultivation separation, experts discovered “blue glow pork” was caused by secondary bacterial contamination called phosphorescent bacteria.

The meat is safe to eat once it has been heated and cooked through. It was quickly nicknamed “avatar-meat”!

(Source)