Fact #49: December 15, 1997
Percent of Americans that 'Worry a Great Deal' About Selected Environmental Problems, 1990 and 1997

Supporting Information

Percent of Americans that "Worry a Great Deal"
About Selected Environmental Problems
	Percentage of Americans
Environmental Problem	1990	1997
The "greenhouse effect" or global warming	30%	24%
Damage to earth's ozone layer	43%	40%
The loss of tropical rainforests	40%	44%
The loss of natural habitat for wildlife	51%	45%
Air pollution	58%	46%
Toxic waste contamination of air and water	63%	59%
Pollution of rivers, lakes, and reservoirs	64%	61%
Source: Pew Research Center for the People & the Press (survey performed November 13-17, 1997; 1990 data from a Gallup poll).