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aricept 20 mg vs 23 mg We cannot forget about petroleum-based fuels as we support cleaner options. As oil and gas resources are developed around the world, methane is often leaked or vented into the atmosphere. It contributes to smog in the ozone, posing a serious threat to air quality and public health, similar to the aforementioned black carbon, which is also released when methane is flared. The technologies already exist to capture leaking methane from oil and gas production, landfills and wastewater treatment centers, and they have been proven cost-effective. We need to continue supporting these existing solutions precisely because methane is twenty times more powerful at trapping heat than carbon dioxide. And, the warmer the air gets, a process exacerbated by methane, the quicker the earth's permafrost – which contains immense amounts of frozen organic matter and thus methane – thaws, the release of which will be devastating to ecosystems around the world.