Bodies left behind in a post-human world.

Forces of nature.

Washington, D.C.

Earth is invaded by predatory forces; pythons that were formerly pets battle native alligators for domination in the Everglades; invasive plants strip oxygen from rivers and lakes; desert sandstorms invade Phoenix; Shanghai sinks.

The fate of entombed treasures, including the contents of a mysterious "doomsday vault," the "Mona Lisa" and the Declaration of Independence; Philadelphia's Liberty Bell cracks for good; San Francisco cable cars and bridges snap.

The possible post-apocalyptic future of U.S. gambling meccas; a new rat pack takes over, wax figures of celebrities melt and iconic hotels crumble in Las Vegas; the ocean tears apart Atlantic City hotels, but the boardwalk stands fast.