08/25/2026
**FIELD FILE 002: METHANE**
*From ACC's Greenhouse Gas Guide*
Methane is one important cause of warming—and one we have practical ways to address.
This Field File follows the evidence from what methane does, to where human-driven emissions come from, to the solutions available now. The encouraging part is that atmospheric methane is measurable, its major sources are understood, and many emissions can be found and reduced with existing approaches.
We can detect and repair energy leaks, upgrade equipment, reduce venting and flaring, prevent food waste, improve landfill-gas collection and capture, and evaluate source-specific agricultural practices for local conditions and tradeoffs.
Some figures in the carousel are modeled or assessment-based, not guarantees or live inventories. Real-world progress depends on deployment, policy, coverage, enforcement, and local conditions—but the routes forward are clear.
Because methane is shorter-lived in the atmosphere than carbon dioxide, sustained methane cuts can reduce near-term warming pressure. They complement, rather than replace, deep CO₂ cuts. We need progress on both timescales.
Swipe through the Field File, then explore the full ACC Greenhouse Gas Guide and methane section:
https://affectclimatechange.com/education/greenhouse/
GreenhouseGases ClimateSolutions ClimateAction AffectClimateChange
Evidence reviewed 24 August 2026. Source organizations and dates are shown on the individual slides.
Headline: “Methane is one cause of warming—and one we can act on.” The slide notes an atmospheric lifetime of about 12 years and nearly 30 percent of the industrial-era temperature rise. It names energy, livestock, rice, landfills, and wastewater as major human-driven sources, and explains that sustained methane cuts can reduce near-term warming pressure while deep CO₂ cuts address the long term. A stylized industrial landscape fills the right side. The ACC Greenhouse Gas Guide header and methane-section URL are visible.
Headline: “The problem is measurable.” Beside an atmospheric monitoring station, large type shows a rounded global mean methane value of 1,937.6 parts per billion. The text says NOAA
