A study published in the current issue of the journal Weed Science reports the effects of elevated carbon dioxide
levels on four species of grass.
Last month, Texas air-quality regulators approved crucial permits for two coal-fired power plants that will capture their carbon dioxide
emissions and sell them for use in nearby oil fields.
Phoenix precisely measured isotopes of carbon and oxygen in the carbon dioxide
of the Martian atmosphere.
Chemical analyses of groundwater suggest that this water use adds about 300 million metric tons of carbon dioxide
to the atmosphere annually.
Which source releases the lowest percent of carbon dioxide
Many plants can move nitrogen from the air into soils, and some researchers expected rising atmospheric carbon dioxide
levels to speed up this natural nitrogen pump.
Critics say that even if this method would work, the process needed to capture and compress the gases would be more detrimental than finding a place to store the carbon dioxide
. Experts who were not apart of the research team believe that the project shows promise but that it would need to be tested extensively in the field before being used.
Large doses of carbon dioxide
(C[O.sub.2]) get into the air when people burn coal, oil, natural gas, and other fossil fuels.
* If global warming is due to anthropogenic greenhouse gases, is the key gas methane, carbon dioxide
or water vapour?
Each mature tree can remove roughly 11 kilograms (kg) of carbon dioxide
Everyone from Oprah Winfrey to Seventeen magazine to myspace.com is "talking trees" for mitigating carbon dioxide
. Calculate your carbon debt with our on-line calculator: http://www.americanforests.org/resources/ccc.
Figure 12 shows a comparison of shift factors from the various tests, elongation, oxygen consumption, carbon dioxide
and carbon monoxide generation.