Summary . President Obama delivered his annual State of the Union speech on January 28, 2014 . A portion dealt with energy policy and g...
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 . President Obama delivered his annual State of the Union speech on January 28, 2014 . A portion dealt with energy policy and g...
Summary . Global warming and cooling cycles over geological time scales are correlated with increasing and decreasing concentrations of at...