The natural gas that is considered better in terms of environmental impact is typically natural gas with lower methane content. Methane is the primary component of natural gas and is a potent greenhouse gas with a global warming potential 25 times greater than carbon dioxide over a 100-year period. According to the U.S. Energy Information Administration (EIA), natural gas with lower methane content can significantly reduce greenhouse gas emissions when used for power generation and heating.

Natural gas with lower methane content is often referred to as "ultra-low methane" or "ultra-clean" natural gas. This type of natural gas is produced through enhanced recovery techniques that reduce the methane content during extraction and processing. The EIA reports that the use of these techniques can reduce methane emissions by up to 50% compared to traditional natural gas production methods.

Furthermore, the Environmental Protection Agency (EPA) has identified methane as a significant contributor to climate change and has implemented regulations to reduce methane emissions from the oil and gas sector. By choosing natural gas with lower methane content, the United States can not only reduce its greenhouse gas emissions but also comply with these regulations.

Data from the EPA indicates that methane emissions from the natural gas sector have decreased by 15% since 2011, largely due to the implementation of methane reduction technologies. This reduction in methane emissions has contributed to a decrease in the overall carbon intensity of the electricity sector, making natural gas a more environmentally friendly option compared to coal.

In conclusion, natural gas with lower methane content is considered better due to its reduced environmental impact, specifically in terms of greenhouse gas emissions. The use of advanced extraction and processing techniques has allowed for the production of cleaner natural gas, which is crucial for the United States to meet its climate goals and reduce its carbon footprint.