Word: sulfured
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...potential consequences of the legislation, coal gasification should not be endorsed as an alternative energy source.Their proponents predicate the justifications for coal gasification incentives on two underwhelming arguments. First, advocates point out that the technology reduces emissions of certain air pollutants such as mercury, nitrogen oxides, and sulfur dioxide. Yet this apparent concern for environmental consequences obscures a lesser-known fact: Unless coal is replaced by significant amounts of biomass, gasification plants emit as much CO2 as traditional plants. To combat high emissions, Massachusetts’s Senate bill requires that gasification emissions match those of natural gas. What looks...
...late 1980s he turned his attention to air pollution. At the time, one of the biggest environmental threats facing America was forest-killing acid rain, due chiefly to rising levels of sulfur dioxide (SO2) and nitrogen oxide (NO) from coal power plants, factories and cars. The answer was simple - reduce those emissions - but the way to get there wasn't. (Any similarities to where we stand on global warming are purely intentional.) The government could simply mandate reduced emissions, or force power plants to install expensive SO2 and NO scrubbers, but that might not be efficient. To Sandor, the answer...
...early 2010, according to Szentgyorgyi. But while many say Earth-like planets are the most likely locations of extra-terriestial life, Szentgyorgyi did note that this belief may prove unfounded. “It may turn out that there’s really smart pond scum that eat sulfur somewhere instead,” he chuckled. “But we really see [Earth-like planets] as the first step.” —Staff writer Clifford M. Marks can be reached at cmarks@fas.harvard.edu...
...trade in cap and trade, and it harnesses the power of the marketplace to fight warming, a concept that helped Republicans like McCain, the presumptive GOP nominee, fall in love with the idea. What's more, it works. Cap and trade was used in the 1990s to limit sulfur dioxide emissions and help tame acid rain. The most promising piece of green legislation now on Capitol Hill, co-sponsored by independent Senator Joseph Lieberman of Connecticut and Republican Senator John Warner of Virginia, is a cap-and-trade proposal. The bill is popular, but that doesn't mean...
Caldeira modeled the effects on climate that Crutzen's notion of spreading sulfur particles into the air would have and found that geoengineering might be able to compensate for a doubling of the concentration of carbon dioxide in the atmosphere. Even more impressive was the price tag: somewhere between a few hundred million dollars and a couple of billion dollars a year, compared with the unknowable cost of decarbonizing the entire world. But the drawbacks are serious. Worsening air pollution is a risk. We'd have to keep geoengineering indefinitely to balance out continued greenhouse-gas emissions, and the motivation...