«This plant will make 10 tons of gas per day, which will go back into the system to make heat to power the system,» he says. (discovermagazine.com)
Natural «sinks» such as forests and oceans remove just 20 billion tons of the gas from the air every year on average, researchers said. (scientificamerican.com)
Of every 10 tons of the gas added to the atmosphere, two or three end up in the water. (sciencenewsforstudents.org)