Other creatures, including a class of micro-organisms that live without oxygen, also produce methane.

Only a third of people produce methane in their farts.

I know that I can hire bacteria to produce methane.

Question: Is there any way to produce methane from inorganic molecules without the use of enzymes or living systems?

For example, can I blast charcoal with hydrogen in the absence of oxygen and produce methane that way?

Many studies have shown that some patients (approximately 35% or more) do not produce hydrogen but actually produce methane.

There may still be some unknown mechanism by which plants produce methane, but that is by no means certain.

There, he hoped to bury the garbage in a landfill, where it would be used to produce methane.

A coal bed may produce methane later in its history if it is uplifted and fractured.

Cattle produce methane, and that is bad for the global climate.