Word: by-product
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Progress also has a plan to sell synthetic gypsum, a by-product of its newly installed pollution-reducing stack scrubbers, to a plant that was scheduled to be built this year by wallboard maker CertainTeed. Gypsum is a critical component of wallboard, which is a critical component of housing construction. You know where that story goes. Because construction has collapsed, CertainTeed has postponed the wallboard plant until...
...Progress also has a plan to sell synthetic gypsum, a by-product of its newly installed pollution-reducing stack scrubbers, to a plant that was scheduled to be built this year by wallboard maker CertainTeed. Gypsum is a critical component of wallboard, which is a critical component of housing construction. You know where that story goes. Because construction has collapsed, CertainTeed has postponed the wallboard plant until...
...even with that battle all but won, scientists are finding a new man-made threat to the ozone layer: nitrous oxide (N2O), otherwise known as laughing gas. A study published in the Aug. 28 Science found that N2O - a by-product of agricultural fertilizer and a number of other industrial processes - is now the biggest ozone-depleting gas in the air, and could present a real threat to the ozone layer in coming decades. And worse, unlike CFCs, N2O - which also adds to global warming - is not regulated by the Montreal Protocol, meaning there is no global effort...
...past year. From its peak of $145 in July 2008, the price of a barrel of crude plummeted to about $35 in January before rebounding to almost $70 this summer. Some analysts deny that futures-trading has driven the swings, noting that commodity-price volatility is a normal by-product of difficult economic times...
...study focused on exposure to substances called polycyclic aromatic hydrocarbons (PAHs), a by-product of the incomplete burning of gas, diesel, oil and coal. PAHs are released as a vapor and also cling to fine, breathable particles emitted from car and truck engines and coal-fired plants. This kind of pollution is common in urban areas and tends to be particularly bad in poor neighborhoods with heavy car and truck traffic and idling. But, Perera notes, these pollutants are widespread enough to affect populations other than those living in poor, urban areas...