As ordinary citizens wring their hands over global warming from carbon dioxide in the atmosphere, scientists are wringing new chemical insights from the usually gaseous compound.
Gorelli of the University of Florence and their colleagues made the glass, dubbed carbonia, by intensely squeezing dry ice--a crystalline arrangement of carbon dioxide molecules--between diamond jaws and heating it in a furnace.
Pruett, environmental services director for Central & South West Corporation, a large Dallas-based utility company, is counting on the trees to do what comes naturally: absorb carbon dioxide
produced by animals, factories and cars, and emit oxygen into the atmosphere.
Jack Pickering of the USGS says the absence of major nitrate reductions conforms to expectations, because releases of nitrogen dioxides
have not declined as much as sulfur dioxide