The study looked at how much methane gas is released from landfills when managing different types of waste. They found that the amount of greenhouse gas emissions from landfills can vary a lot depending on the type of waste and how the gas is managed. By collecting and using the gas to generate electricity, greenhouse gas emissions can be reduced by up to 44% compared to traditional landfilling. This information can help make better decisions about how to handle and use municipal solid waste in a more sustainable way.