What is methane? Methane is the main component of “natural gas,” which is a significant source of heat and energy in the U.S. and globally. It is a colorless, odorless gas that is lighter than air and is chemically composed of one molecule of carbon and four molecules of hydrogen. Methane is generally stable but can be explosive if enough mixes with air. Because of its potential for combustion, natural gas utilities add scents to it as a safety feature.  What does it do to our climate? Methane is a potent greenhouse gas. Anthropogenic methane emissions are likely responsible for 0.5° C of warming since the industrial revolution. After carbon…