No action is without its side effects.

The methods that EPA introduced after 1970 to reduce air-pollutant emissions worked for a while, but over time have become progressively less effective.

Earth Day 1970 was irrefutable evidence that the American people understood the environmental threat and wanted action to resolve it.

In certain ways, I'm not very different than I was when I was a teenager.

When you fully understand the situation, it is worse than you think.

The environmental crisis is a global problem, and only global action will resolve it.

Nothing can survive on the planet unless it is a cooperative part of larger global life.