Can you guess?

1. “In 1971, I participated in the second Earth Day and became the coordinator of an interdisciplinary Environmental Studies program at West Georgia College.”

Find out here.

Grist relies on the support of generous readers like you. Donate today to keep our climate news free.

2. On the occasion of the first Earth Day: “[there is an] absolute necessity of waging all-out war against the debauching of the environment.”

Grist thanks its sponsors. Become one.

Find out here.

3. “Our nation has both an obligation and self-interest in facing, head-on, the serious environmental, economic and national security threat posed by global warming.”

Find out here.

4. “We simply must do everything we can in our power to slow down global warming before it is too late. The science is clear. The global warming debate is over.”

Grist thanks its sponsors. Become one.

Find out here.

Lesson: Stewardship is a value that should always transcend party politics.