History - Countdown To Armageddon

Asteroids on a collision course with Earth, super volcanoes, global warming, killer viruses all are potential catastrophes that threaten to wipe out life on our planet. Are these simply natural disasters that have been occurring since time immemorial? Orare these threats terrifying prophesies from the Bible that are at last coming true? Are our fears overblown? Or are the infamous Four Horsemen of the Apocalypse riding among us in a countdown to Armageddon?