Thanksgiving nicely focuses our attention on things of lasting importance: family, friends, community, a rich harvest. None of these blessings comes without cost or sacrifice. We should consider what we must give of ourselves to preserve such abundance in the face of increasing climatic instability.

One needn't ponder this question in a vacuum. Several best-sellers offer advice about what we must ask of ourselves and one another. Their titles suggest that we needn't break much of a sweat: "It's Easy Being Green," "The Lazy Environmentalist," or even "The Green Book: The Everyday Guide to Saving the Planet One Simple Step at a Time."

Although each offers familiar advice ("reuse scrap paper before recycling" or "take shorter showers"), it's what's left unsaid by these books that's intriguing. Three assertions permeate the pages: (1) We should look for easy, cost-effective things to do in our private lives as consumers, since that's where we have the most power and control; these are the best things to do because (2) if we all do them the cumulative effect of these individual choices will be a safe planet; which is fortunate indeed because (3) we, by nature, aren't terribly interested in doing anything that isn't private, individualistic, cost-effective and, above all, easy.

This glorification of easy isn't limited to the newest environmental self-help books. The Web sites of the big U.S. environmental groups, the Environmental Protection Agency and even the American Association for the Advancement of Science offer markedly similar lists of actions that tell us we can change the world through our consumer choices, choices that are economic, simple, even stylish. Al Gore himself isn't immune. His recent Live Earth concert featured a who's-who lineup of celebrities who said that if we all do our little bit to recycle and conserve -- the simple things, mind you, because that's all we'll need (translation: that's all they think we'll go for) -- we can together rescue the world for our children and grandchildren.

Never has so little been asked of so many at such a critical moment.

Obsessing over recycling and installing a few special light bulbs won't cut it. We need to be looking at fundamental change in our energy, transportation and agricultural systems rather than technological tweaking on the margins, and this means changes and costs that our current and would-be leaders seem afraid to discuss. Which is a pity, since Americans are at their best when they're struggling together, and sometimes with one another, toward difficult goals

This Thanksgiving, the greatest environmental problem confronting us isn't melting ice, faltering rain, or flattening oil supplies and rising gasoline prices. Rather, it's that when Americans ask, "What can I do to make a difference?" we're treated like children by environmental elites and political leaders too timid to call forth the best in us or too blind to that which has made us a great nation.

Surely we must do the easy things: They slow the damage and themselves become enabling symbols of empathy for future generations. But we cannot permit our leaders to sell us short. To stop at "easy" is to say that the best we can do is accept an uninspired politics of guilt around a parade of uncoordinated individual action.

The time for easy is over. We're grown-ups who understand the necessity of hard work and difficult choices. We're ready for frank talk about how we best confront -- in ways rewarding, confusing, creative and hard -- the planetary emergency before us.

Maniates is a professor of political science and environmental science at Allegheny College in Meadville, Pa.

(Nov. 24, 2007)