Word: carbonization
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...research shows minorities living in poor urban areas are more likely to die from asthma than any other group, largely contributing to the rise in asthma deaths nationwide since the late 1970s. But the deaths cannot be blamed on more carbon monoxide and ozone clogging the air, since air standards have improved in some American cities. Instead indoor allergens and difficulty in getting health care may have more to do with why asthma is more deadly for the urban poor...
...China meets its energy needs has an impact far beyond its boundaries. Sulfurous emissions from Chinese power plants and factories blow eastward and fall as acid rain on Japan and Korea. In fact, the pollution has planet-wide + implications: China is the world's second-largest producer of carbon dioxide and other greenhouse gases that are collecting in the atmosphere and may, many scientists believe, lead to global warming. If China maintains its annual economic growth rate of 11%, the country will need to add 17,000 megawatts of electrical generating capacity each year for the rest of the decade...
...around a heavy dependence on coal. The best China can hope for, say experts, is to cut coal's portion of the energy mix from 75% to 60% by 2010. The imperative, then, is to find cleaner, more efficient ways to burn the plentiful fossil fuel, reducing emissions of carbon dioxide, sulfur compounds and the incompletely combusted particles that form soot...
Even if coal is burned cleanly and efficiently, it produces large amounts of carbon dioxide, the most common greenhouse gas. To help ease the threat of global warming, China might use new technology to convert a portion of its coal reserves to natural gas, which delivers much more energy for the amount of CO2 released. The process, though, is expensive. The U.S. Department of Energy asked Congress this year for a $50 million grant that would be earmarked to help China build a demonstration coal-gasification power plant, but the appropriation has not been approved. By contrast, Japan is underwriting...
...recently as 10 years ago, natural gas was considered a dead-end industry because analysts grossly underestimated global reserves. Now it is rapidly becoming a favorite fuel of electric utilities. More than 30% cheaper than oil, it burns efficiently, and it produces fewer pollutants and a third less carbon dioxide than oil. World production has risen 30% since the mid-1980s. Because of its advantages over dirtier hydrocarbons, natural gas may be a bridge between oil and coal and the solar...