Little Increase in Americans’ Global Warming Worries

I am not surprised that Americans worry more about the several categories of water than anything else. I am, however, surprised that those who worry a great deal about global warming is essentially the same as it was in 1989.

Any thoughts?

That's an extraordinary number of people very worried about pollution of drinking water.

Where do they think drinking water comes from, that it could be polluted by the time it reaches them?