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on june 30, 1908, one of the biggest explosions in history rocked a forested region in siberia. the
theories of what happened are as widespread as the damage the fireball caused. some speculate
asteroids, space aliens and black holes were the culprit. others focus on the earth, pinning the
blame on everything from subterranean volcanoes to acclaimed physicist nikola tesla. join the
ongoing investigation over what caused one of the biggest explosions in history
if you're an x-files fan this will be familiar to you.