What are your thoughts on U.S. population growth and immigration? Take our Earth Day survey and tell us what you think. Then, compare your responses to those of Americans in 1972 and other Americans across the country. And find out what NumbersUSA is doing with our survey at Earth Day Dallas 2012. We're offering attendees of the event a chance to take the survey. You can also find their results on our results page.
Updated: Tue, Apr 24th 2012 @ 6:38am EDT