as I read, about methane, which some scientists believe in the short term has an even greater effect. Both gases have natural and man-made sources
Gasses such as methane and nitrous oxide also have harmful effect but not as carbon dioxide where major effect is from the manufacturing, burning of fossil fuels and transportation e.t.c
Because I live in the U. S. (largest producer of natural gas in the world), I am acutely aware of methane issues. Methane is implicated in a really big way in global warming. I'm no expert (I'm not even a scientist) but I do read about the environmental impact of methane release and often come across passages such as this from The Union of Concerned Scientists
I don't think it's a contest between methane and carbon dioxide. Excess emission of either is environmentally noxious.
Thanks for your feedback.
Exactly! I agreed with your conclusion @agmoore and thanks to you too for providing more resources on the said topic.