Methane's Secret Origins: Unexpected Sources of Dangerous Greenhouse Gas revealed

Hydroelectric dams and their reservoirs release nearly one billion tonnes of CO2 equivalent each year due to methane emissions from decomposing matter at the bottom of reservoirs. Efforts are underway to capture this methane for energy generation and heating.

Freshwater ecosystems like rivers and lakes contribute almost half of global methane emissions. Pesticide run-off and other pollutants lead to high concentrations of methane, carbon dioxide, and nitrous oxide in rivers, especially in polluted areas.

Cows, primarily their burps, are a major source of methane emissions. Agriculture, including livestock farming, is the largest human source of methane emissions globally, with cattle being significant contributors.

Natural wetlands are the largest natural source of methane. Rising temperatures and erratic rainfall due to climate change are causing wetlands to release methane more rapidly.

Waste decomposition in landfills emits significant amounts of methane. Composting organic waste instead of sending it to landfills can help reduce methane emissions.

Wildfires are a major source of methane emissions, especially as they grow in frequency and intensity due to climate change. Methane continues to be emitted from scorched areas long after the fires are extinguished.