Methane 101: Understanding the Second Most Important Greenhouse Gas

EcoWatch
Aug 5, 2025, 4:17 pm264 ptsTop
By Olivia Rosane and Cristen Hemingway Jaynes Quick Key Facts Methane is the second most important greenhouse gas after carbon dioxide and is responsible for around one-third of current global heating. Atmospheric methane concentrations have increased by 256 percent since pre-industrial times. Methane is a…

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