Algae can produce natural gas. The Pacific Northwest National Labratory (PNNL) released method to catalytically gasify hydrothermal algae. The relative low temperature process (350oC recycles carbon dioxide waste gas. The yield is 400 times faster than anaerobic digestion.The original article is from Geology.com.PNNL in Richland, Washington has a Energy and Environment Directorate with the focus area Energy Efficiency and Renewable Energy. Some of their aims are to convert biomass to fuel and chemicals, and use renewable resources effectively..