Airborne observations identify major source of US landfill methane emissions

A team has found via testing from airplanes that landfill work faces tend to be responsible for the biggest share of methane emissions in U.S. landfills. Their findings are published in the journal Environmental Science and Technology. The researchers are from Carbon Mapper, a California nonprofit dedicated to finding ways to reduce greenhouse gas emissions, Arizona State University and the U.S. Environmental Protection Agency.