Americans are hailing the inauguration of a president vowing to “heal the planet,” but a growing number of them don’t think it’s their problem.

That’s the finding of a new Rasmussen poll, released on the eve of Barack Obama’s inauguration.

On Monday evening, Rasmussen Reports published a poll saying that 44 percent of Americans blame global warming on “planetary trends,” while only 41 percent blamed it on human activity.

The opinions break down along political lines, Rasmussen found:

Fifty-nine percent of Democrats blame global warming on human activity, compared to 21% of Republicans. Two-thirds of GOP voters (67%) see long-term planetary trends as the cause versus 23% of Democrats. Voters not affiliated with either party by eight points put the blame on planetary trends.

In July 2006, 46% of voters said global warming is caused primarily by human activities, while 35% said it is due to long-term planetary trends.

In April of last year, 47% of Americans blamed human activity versus 34% who viewed long-term planetary trends as the culprit. But the numbers have been moving in the direction of planetary trends since then.