Word: nitrogenous
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...billed simply as "Steve the Chem Tutor," apparently well-known in Cabot for his Chemistry tutoring, donated a liquid nitrogen demonstration had been donated by And not to be ignored was a "Billy Weitzel game-worn Cabot Strauss Cup jersey...
Less familiar is the havoc wreaked on the nitrogen cycle. Through the use of fertilizers, the burning of fossil fuels and land clearing, humanity has doubled the levels of nitrogen compounds that can be used by living things. But those levels are more than can be efficiently absorbed by plants and animals and recycled into the atmosphere. These excess nitrogen compounds wash into fresh- and saltwater systems, where they produce dead zones by stimulating suffocating growths of algae. Since the global food system is based on aggressive use of fertilizer, restoring the balance of the nitrogen cycle poses a daunting...
...Ballard Power Systems, gets its energy from hydrogen--the most abundant fuel in the entire universe. Hydrogen, unlike fossil fuels, contains no carbon atoms and thus generates zero carbon dioxide. However, it could produce some pollution, since burning hydrogen taints the atmosphere by rearranging air molecules to form nitrogen oxides and ozone...
...Since viruses are so good at hacking into the human body, scientists figure they can be used as packaging material for whatever gene the patient lacks. In Jesse's study, all 18 participants had the same disease: ornithine transcarbamoylase (OTC) deficiency, which slows the liver's ability to metabolize nitrogen and releases deadly ammonia into the bloodstream. So Wilson's team harnessed the adenovirus (a cause of the common cold), neutralized harmful elements and used the virus to send in normal copies of the gene that was defective in Jesse...
Once groundwater is contaminated, it is hard to clean up. In 1,345 shallow wells sampled by the U.S. Geological Survey, about 15% exceeded drinking-water standards for nitrate (a nitrogen compound), which at high levels can lead to the potentially fatal "blue baby" syndrome in infants. Many suspect aquifers were in California, the Great Plains and the Mid-Atlantic region. Pesticides have shown up in more than half of shallow wells the USGS studied in agricultural and urban areas. "Is it right that people in rural communities should have to buy bottled water?" Seacrest asks. "What kind...