National Geographic - 10 Ways to End the World (2011) Part 1

10 Ways to End the World
More than 99.9% of all species that have inhabited the Earth are extinct – could mankind be next?, Black holes hurdling through space, deadly asteroids able to wipe out northern Europe in a single blow, hostile extra-terrestrials…science has introduced you to a host of galactic doomsday scenarios that could jeopardize your planet. But, these cosmic catastrophes are second tier to the dangers that Mother Nature – and mankind itself – can inflict. Will a supervolcanic eruption alter our planet’s atmosphere so completely that we stand little chance of survival? Could a pandemic on a scale larger than the 1918 Spanish influenza sweep the globe? , Or, will mankind’s quest to push the bounds of scientific understanding ultimately lead to its demise? 10 Ways to End the World is a countdown of the top ten most chilling threats that could usher in the end of humanity as you know it.

Part 1:
From collapsing stars to deadly pandemics, scientists and other experts explore five potential threats from nature that could end mankind.

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