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The article reports on the results of a workshop sponsored by three United States federal agencies regarding the impact of carbon dioxide emissions on coral reefs. The paper entitled "Impacts of Ocean Acidification on Coral Reefs and Other Marine Calcifiers," indicate that calcification rates in coral could decrease by as much as 60 percent within the 21st century as a direct result of the increasingly acidic ocean condition.

The article reports on a feasibility study that measured the adsorption of pure carbon dioxide and methane on dry coal at 45 and 60° C, by utilizing a magnetic suspension balance with in situ density measurement. The study focused on the Sulcis Coal Province in Italy. As expected, it was observed that carbon dioxide is adsorbed much better than methane in all cases.

The article reports on a study that examined the effect of predicted adsorption behavior in activated coal and carbons to clean carbon dioxide gas from fossil fuel power plants. Isotherms were generated through a grand canonical Monte Carlo simulation of carbon dioxide adsorption in slit-shaped pores with an underlying graphitic structure. It was observed that coal-like surfaces are better adsorbents of carbon dioxide compared to planar, homogeneous graphitic slit pores of similar width.

The article examines the performance of an indirect temperature swing adsorption process for the removal of carbon dioxide from nitrogen by employing 13X zeolite. It was observed in an experiment with a 10 percent carbon dioxide-nitrogen mixture, that because of the cooling effect, the adsorbent capability was preserved and close to that of an isothermal adsorption.

The article reports on a study where two heavy reflux pressure swing adsorption cycles were investigated at the periodic state for the capture of carbon dioxide from flue gas at 575 K, using a potassium-promoted hydrotalcite-like compound. Six hundred forty simulations were obtained from a cyclic adsorption process simulator. The investigation focused only on the values of adsorption and desorption mass transfer coefficients of carbon dioxide on the process performance.

The article discusses the results and attributes of separation processes for arsenic removal and chemical-free softening of hard water, using ion-exchange fibers. Anion-exchange-supported hydrated ferric oxide nanoparticles provide a high arsenic removal capacity. Meanwhile, the environment-friendly hardness removal process employs harvested snowmelt sparged with carbon dioxide as the regenerant.

The article describes the application of the Life Cycle Assessment approach to quantify the effective environmental impacts of carbon dioxide sequestration in mineral rocks. The increase in environmental impacts stems from the different Eco-indicator versions used for impact assessment calculations. The most viable option and commercially available technology is proven to be carbon dioxide removal by chemical absorption.

Investigates the environmental impact of using supercritical carbon dioxide as a rinsing agent to replace ultrapure water in semiconductor manufacturing. Gate-to-gate of life-cycle inventory of supercritical carbon dioxide usage; Total pumping, cooling and heating requirements; Economic benefits of supercritical carbon dioxide; Major assumptions about the supercritical carbon dioxide stripping process.

The article offers a report about the United States warmth record for 2006. According to four climate scientists from United States National Oceanic and Atmosphere Administration, the greenhouse effect in America was behind more than half of last year's, 2005, record-breaking warmth across the contiguous United States. It states that global warming in 2006 was aggravating all manners of U.S. extremes: severe droughts, the rising cost of air conditioning, pine bark beetles ravaging once-cool western forests.