![\"CO2\"](\"http:\/\/t3.gstatic.com\/images?q=tbn:g35z2nSg3npbfM:http:\/\/www.treehugger.com\/global-warming-photo-lester-brown-1.jpg\" "\\"CO2\\"")
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" … what to do with the 30 billion metric tons of carbon dioxide the human race produces every year by burning fossil fuels. Half … is absorbed by oceans, plants and trees. The rest contributes to the atmospheric build-up of greenhouse gas …"<\/p>\n
" … a bold solution that will inevitably come up is to capture and sequester some of that carbon dioxide deep underground. Onshore geologic cavities in the U.S. could hold 2 trillion tons of CO2<\/sub> … enough to soak up 300 years of national output … and would generate a good deal of anxiety for those living above the gas…."<\/p>\n " … put the carbon where nobody lives … a perfect place 130 miles off the eastern U.S. seaboard and 2 miles below the ocean … porous sandstone formation, trapped under 3,200 feet of hard shale, that stretches from New Jersey to Georgia … "<\/p>\n "SCS Energy … aims to start injecting CO2<\/sub> into this undersea rock by 2016 and to make a profit … "<\/p>\n " … technique called coal gasification that heats coal and partially combusts it in pure oxygen to make carbon monoxide and hydrogen. Adding water turns the carbon monoxide into CO2<\/sub>. The 5 million tons of CO2<\/sub> produced annually by the plant would be piped out to sea and injected into … sandstone. Almost all the hydrogen would be used to power a turbine during hours when the price of electricity is high. When power prices are lower, more hydrogen would be diverted to make ammonia or urea for fertilizer."<\/p>\n "Carbon capture and storage on a large scale is still more theoretical than real … <\/strong>Sequestration’s critics are legion, but it may be a requirement to meet the 2020 greenhouse-gas-reduction goals most countries set for themselves prior to the Copenhagen talks…."<\/span><\/p>\n <\/p>\n