Demonstrators Rally Against Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Dark ominous clouds passing rapidly in front of the orange sun with visible sunspots, on one of the most polluted days in the Earth's history, it looks like hell on earth.

Car Exhaust Pipe - NTSC

Car Exhaust Pipe - Pollution / Emissions HD

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Animation of rotating Methane molecule

NTSC: Air pollution

Demonstrators Rally for Clean Drinking Water at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Anti-Fracking Protesters in Slow Motion at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Protesters March in Slow Motion at Rally Against Fracking at the US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Environmental Protesters at Anti-Fracking Rally at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Environmentalists March in Slow Motion at Rally Against Fracking at the US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Speakers on Stage at Anti-Fracking Rally at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Environmentalist Protester in Penguin Costume at Anti-Fracking Rally at the US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Woman Protests Fracking in New York at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)

Smokestack

Smokestack

Protestors March Against Fracking in Slow Motion at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)