The Capital Threat

S1 E3: Our nation's capital is under attack. Forces of nature threaten to destroy our national treasures. What will happen to The Capital, The Washington Monument or the Constitution after man disappears? Three thousand miles away, Los Angeles, the center of the entertainment world, faces the same threat. Wilted palm trees set the scene for a massive inferno. What will survive? What creatures might take our place? And could another capital to mankind emerge in the Pacific Ocean when we're gone?