“We are in Danger of Destroying Ourselves…”

We are in danger of destroying ourselves by our greed and stupidity.”

�� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� — Stephen Hawking

50,000 gallons of oil recently spilled into the Yellowstone River.

How many oil spills is too many?