A new study finds that the HIV virus has been around for at least a century. An ABC News article says that “genetic analysis pushes the estimated origin of HIV back to between 1884 and 1924, with a more focused estimate at 1908.”

Hey, wait a minute. 1908 is when an object from space (probably a meteor or comet) entered the atmosphere and exploded near the Tunguska River in Siberia. You don’t suppose . . .

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