Free Republic

OSLO (Reuters) - A 200-year period covering the heyday of both the Roman Empire and China's Han dynasty saw a big rise in greenhouse gases, according to a study that challenges the U.N. view that man-made climate change only began around 1800. A record of the atmosphere trapped in Greenland's ice found the level of heat-trapping methane rose about 2,000 years ago and stayed at that higher level for about two centuries. Methane was probably released during deforestation to clear land for farming and from the use of charcoal as fuel, for instance to smelt metal to make weapons, lead...

WASHINGTON - There's growing worry about global warming, but how much of it is the work of that power plant just outside town? And if Congress limits heat-trapping greenhouse gases, will it affect utility and electric bills? And who's the biggest corporate culprit when it comes to climate change? Answers to these questions may be only a couple of computer clicks away. A new interactive online database unveiled Wednesday provides maps, color-coded categories and detailed information about who is putting 10 billion tons of carbon dioxide into the atmosphere annually from power plants around the world — about a fourth...