Introduction. Concern about an increase in the long-term world-wide average temperature ascribed largely to release of greenhouse gases by mankind has been expressed by climate scientists for several decades. Harmful effects on climate, extremes of weather, and human consequences from this temperature increase have also been predicted over the same time scale. Corresponding degrees of concern among the peoples of the world has varied with time and by nation or region of the world.
More than half of Americans surveyed recognized that, for the preceding year, unusual weather events have occurred (56% for their local area, and 62% elsewhere in the U. S.).
© 2012 Henry Auer