Black Carbon

With public interest in climate change reaching new highs during the summit in Copenhagen, today's NASA Image of the Day, showing the distribution of black carbon over the earth's northern hemisphere, assumes added relevance. Black carbon, better known as soot, is thought to be the second largest contributor to global warming after CO2. Found globally but concentrated over Asia, black......read more

The Climate War's Second Front

We have long known that carbon dioxide is not the only pollutant that causes climate change. But, to date, the global effort to address global warming has largely centered on that grandaddy of greenhouse gases -- with next to no meaningful progress. Now, the climate war is opening a second front. Last week, the the United States and five other countries announced a new initiative to......read more