Word: carbone
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Dates: during 2000-2009
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...everyone agrees. "Biochar isn't a silver bullet, not by a long shot," says Dominic Woolf, a researcher at Swansea University in Wales. "You have to look at the big picture: pyrolysis itself produces carbon dioxide emissions, and you have to consider that when you try to determine biochar's capacity for sequestration." Lehmann says he welcomes the doubts, and notes that addressing them requires "investors willing to take the risk." Which is where chicken farmer Frye, with his small biochar operation, comes in as one of the few people out there actually making a business of it. With...
...have doubled, and countries such as Indonesia have set ambitious goals for geothermal generation. The financial crisis has hit the renewables sector, to be sure, but analysts say that thanks to U.S. President-elect Barack Obama's green-energy agenda, and recent G-8 goals to cut carbon emissions by 50% by 2050, the industry will come back strong. "I have people calling me asking, 'Where should I put my money? Who do I invest in?' " says Mark Taylor, a geothermal analyst with renewable-energy-research firm New Energy Finance. "I'm still pretty optimistic about everything...
...that project on hold for now, but Alcoa, which already has one smelter in Iceland, still sees the country as a site for cheap, power-intensive smelters. By going geothermal, which has less impact on the environment, Alcoa believes it can mitigate the hundreds of thousands of tons of carbon dioxide a smelter emits every year. "If you compare the offset, it's six to eight times cleaner to produce here" than in a location where a smelter would get electricity from a coal- or oil-based source, says Tomas Mar Sigurdsson, general manager of Alcoa Iceland...
Geothermal has its share of critics. The power plants release low levels of carbon dioxide, nitric oxide and sulfur, and some people worry that drilling holes deep into the earth destabilizes the land around it. This summer, police arrested a group of environmental activists who had chained themselves to machinery at a drill site near the nation's largest power station outside Reykjavik to protest the plans for a new aluminum factory. Iceland's government has responded to such criticisms by trying to diversify and attract companies like Microsoft, Cisco and Yahoo!, all of which have discussed building massive server...
...drive stakes into the ground and measure out circles with diameters of 13 ft. (4 m) to 46 ft. (14 m) - and then within that area they chart the diameter of every tree. But it's not the number of trees they want to discover. They're really measuring carbon, and FAN and TNC can use those calculations - together with sophisticated satellite data - to work out precisely how much potential greenhouse gas is locked within Noel Kempff. That matters, because in 1997 TNC, U.S. utility companies American Electric Power (AEP) and PacifiCorp, and oil major BP Amoco paid Bolivia...