We're talking about events that are witnessed by thousands, photographed, well-documented and yet are utterly baffling. Such as...

We may look down on all the primitive peoples who are confused by lightning and think thunder is the voice of the gods, but the truth is to this very day there are natural phenomena that our scientists still don't being to understand.

7 Naga Fireballs

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What would you do if you were walking along a tropical river at night and it suddenly began burping up egg-sized balls of red light? It happens every year in October along the Mekong river (the same one featured in classic Vietnam movies like Rambo II and the flashbacks from Rambo III). The phenomenon is known as the Naga Fireballs, and experts agree that it is "just weird as shit."

What happens is this: starting under water, tens to thousands of glowing red lights are seen rising out from the bottom of the river, then lifting hundreds of feet into the sky before disappearing.

It literally appears that the river is spitting out flaming M&Ms. They have never harmed anyone, and don't even seem to touch anything let alone set anything on fire. However, both of those facts were probably unavailable to dull the ferocity of the pant-crapping that took place when the event was first witnessed.

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The Naga Fireballs are viewed by thousands of people every year, and a healthy number of videos documenting the phenomenon are hosted on YouTube, which is the most reliable scientific journal on the Internet next to Wikipedia.

So, What do the Smart People Think is Happening?

The number one theory suggests that fermented sediment in the river, things such as decomposing remains and animal waste, release bubbles of self-immolating gas that rise to the surface and combust. That's right, the best explanation science has come up with for the Naga fireballs is essentially that it eats too much meat. Suspiciously absent from this theory is a reason why the phenomenon occurs around the same time every year. Unless the Mekong eats a regimented diet of Activia yogurt, those meat eaters among us have to be somewhat suspicious of such a regular rate of expulsion.

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The locals are simply unwilling to accept any scientific explanation for the Naga Fireballs, preferring to preserve a sense of mysticism. Scooby-Doo could roll up in the Mystery Machine and uncover a giant underwater cannon shooting phosphorous balls into the sky and he'd probably be told to fuck off. Also, they would probably eat him.