47% Blame Global Warming on Planetary Trends  - Rasmussen Reports™

Questions continue to mount over the science behind years of studies that say humans are chiefly to blame for global warming. But reflecting a trend that has been going on for more than a year, just 35% of U.S. voters now believe global warming is caused primarily by human activity.

The latest Rasmussen Reports national telephone survey finds that 47% think long-term planetary trends are mostly to blame, down three points from the previous survey in January. Eight percent say there is some other reason, and 10% aren't sure.
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Belief that human activity is the primary cause of global warming has declined significantly. In April 2008, the numbers were nearly the mirror image of the current numbers. At that time, 47% blamed human activity and only 34% named long term planetary trends as the reason for climate change.