Armed with Science , the U.S. Defense Department Science Blog, reports that “carbon dioxide from fossil fuel combustion is a trending news topic amid concerns about climate change and global warming, and is the largest contributor to U.S. carbon dioxide emissions.”  

“According to the Institute for Energy Research, 82 percent of America’s energy is produced from the combustion of fossil fuels.”  

“It is believed that hydrogen gas is an ideal replacement for fossil fuels; however, hydrogen gas is difficult to safely store and currently either produced from fossil fuel processes or captured as a byproduct from natural gas and petroleum conversion. Both processes contribute to global carbon emissions.”