Word: sulfured
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Estimated removal costs are less than $200,000, and low-sulfur biodiesel now fuels trucks and sweepers. Still, sifting tons of litter is a challenge; only a fraction will be recycled...
...years, there has been a general “command and control” approach to regulating the problem. For example, the cap-and-trade system, which consists of an overall cap on emissions and the buying and selling of emission permits, has been very successful, especially in the sulfur allowance market, he said. Kolstad expects to see “major progress” in carbon emissions in the U.S. over the next two years. The event, which attracted approximately 100 faculty members, graduate students, and undergraduates, was organized by the Harvard Environmental Economics Program (HEEP). Kolstad...
...without them we'd all be stuck in poverty. But we've learned step by step of harmful side effects. First we learned that coal-fired power plants created acid rain, so we changed the rules of the game to insist on smokestack scrubbers to eliminate pollutants like sulfur oxides. Second we learned that automobiles produced pollutants that caused smog, so we changed the rules to insist on catalytic converters. Now we've learned that the carbon dioxide produced by burning fossil fuels is causing dangerous climate change. We'll need to change the rules of the game one more...
...actually sustained flames. China is also more proactive about the environmental impact of growth. The Communist Party has required that the same economic growth be achieved in 2010 using 20 percent less energy than in 2005. For the same time period, the government has also mandated that mercury, sulfur dioxide, and other pollutant emissions decline by 10 percent in total. None of this is a guarantee that China’s next generation will see more blue skies, but it certainly is a step in the right direction...
...swath of central India was buried by a series of eruptions at around the time of the dinosaurs' demise. The remains of the flows, known as the Deccan Traps, still cover some 193,000 sq. mi. (500,000 sq km). The eruptions would have poured carbon dioxide and sulfur dioxide into the air, triggering runaway global warming and acid rain. That's bad news for living things, but it has never been clear if the eruptions were sufficiently well timed to cause the extinctions...