Celebrate America's 250th birthday with five facts about the Environmental Protection Agency or EPA.

Sources:

Our Mission and What We Do - EPA website

The Origins of EPA - EPA website

Celebration 50 Years of the U.S. Environmental Protection Agency report

A Look at EPA History: Environmental Wins and Remaining Woes by Eban Goodstein

Environmental Enforcer: How Effective Has the EPA Been in Its First 40 Years? from the Scientific American