Question

How does landfills increase the greenhouse effect

Answer 1

Answer:

Landfills have a huge greenhouse gas problem. ... But at the landfill, the food and yard waste that trash contains is decomposing and releasing methane, a greenhouse gas that's 28 times more potent than carbon dioxide. Landfill gas also contributes to smog, worsening health problems like asthma

Answer 2

Answer:

We take out our trash and feel lighter and cleaner. But at the landfill, the food and yard waste that trash contains is decomposing and releasing methane, a greenhouse gas that’s 28 times more potent than carbon dioxide. Landfill gas also contributes to smog, worsening health problems like asthma.

Globally, trash released nearly 800 million metric tons (882 million tons) of CO2 equivalent in 2010 — about 11 percent of all methane generated by humans. The United States had the highest total quantity of methane emissions from landfills in 2010: almost 130 million metric tons (143 million tons) of CO2 equivalent. China was a distant second, with 47 million (52 million), then Mexico, Russia, Turkey, Indonesia, Canada, the United Kingdom, Brazil and India, according to the Global Methane Initiative, an international partnership of government and private groups working to reduce methane emissions.

Because methane typically has a much shorter life in the atmosphere than CO2 (12 years compared with 100 to 300 years for carbon dioxide), reducing methane release from landfills can help rapidly reduce climate change risk.