Summary . A survey of Americans in spring 2011 shows that almost 40% are grouped as Alarmed or Concerned about global warming . Many of th...
Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century and its projected continuation. Since the ...
Summary . A survey of Americans in spring 2011 shows that almost 40% are grouped as Alarmed or Concerned about global warming . Many of th...
Summary . A survey of Americans in 2010 shows a majority believe in global warming , many of whom understand that greenhouse gases are ...