November 13, 2013 |
Society has slowed down global warming several times over the last century without even trying, new research says. A study found that the rate of global warming has ratcheted down in response to major world events, including the two world wars, the Great Depression and, most recently, a global ban on ozone-depleting substances. Researchers attribute the most recent slowdown, since the late 1990s, at least in part to the decline in emissions of chlorofluorocarbons, greenhouse gases that were phased out under the 1989 Montreal Protocol . The international treaty was not intended to fight climate change, but to protect the atmosphere's ozone layer.
May 21, 2013 |
WASHINGTON - Global warming and clean energy should be priorities for Congress and the president, a majority of Americans said in a recent survey. In the survey, released Tuesday by Yale and George Mason universities, 70% of American adults say global warming should be a priority for the nation's leaders, while 87% say leaders should make it a priority to develop sources of clean energy. Those support levels have dropped by 7% and 5% respectively since fall. Six in 10 Americans want the U.S. to reduce greenhouse gas emissions regardless of other countries' emissions efforts, according to the survey.