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Was there ever a natural nuclear reactor?

“About two billion years ago, uranium deposits at Oklo in Gabon formed a natural nuclear reactor.”

Reference: Scientific American

What saturation of sulfur dioxide will cause people to cough

Sulfur dioxide is a colorless gas with a suffocating, choking odor. It is toxic to humans and concentrations as low as 8 ppm will produce coughing. Incredibly, in the Odyssey, Homer describes the burning of sulfur (formation of SO2) as a way that homes were 'fumigated'.

How did uranium get its name?

Uranium was discovered in 1789 and named after the planet Uranus, discovered in 1781.

Who created the periodic table of elements?

Russian chemist Dmitri Mendeleev published his periodic table in 1869. He left gaps for elements that had not been discovered yet and correctly predicted their properties.

Another fact

“About two billion years ago, uranium deposits at Oklo in Gabon formed a natural nuclear reactor.”

More from this shelf

What saturation of sulfur dioxide will cause people to cough

How did uranium get its name?

Who created the periodic table of elements?