The phrase "to increase the methane" means to make the amount of methane gas larger or higher.
Sentences with «to increase the methane»
In the longer - term, a crucial question that remains is whether methane oxidation in natural environments can match potentially increased methane production in response to predicted climate change. (eos.org)
We've increased the methane content by, what, 150 percent? (discovermagazine.com)
Note that increased methane also leads to increased ozone concentrations, for added radiative forcing bang for your methane buck. (realclimate.org)