This photo shows the methane blankets, accentuated in bright green, extending from the Earth’s poles. Of all greenhouse gases, methane seems the most innocuous — yet it traps 23 times more heat in the atmosphere than does CO2. Atmospheric levels of methane have increased more than 150 percent since 1750 — and could double again by 2050. (Photo by Goddard Institute for Space Studies, NASA)
Chen also is looking for ways to streamline digester technology in hopes of making it more cost effective for farmers. In addition, his team continues to develop value-added byproducts to improve economic returns.