[JadeNB]

> human population growth becomes a consideration ... one that is rarely mentioned btw in climate change discussions.

Not in the context of methane generation, but I'd imagine there's scarcely a discussion of climate change that doesn't include the impact of humans in general, and human population growth in particular.

[adenozine]

There's a subtle difference in examining the actual footprint of a human body, versus the environment that exists to support the humans. It's easy to say that, because we examine air conditioning, automobiles, etc, but how often do we consider the volume of air that we breathe compared to these other impact factors?

I haven't seen it done so much, maybe not ever. I'm biased, of course, from reading studies that interest me.

[js8]

> There's a subtle difference in examining the actual footprint of a human body, versus the environment that exists to support the humans.

Rule of thumb, human body footprint is negligible. The top 10% wealthiest humans account for 50% of GHG emissions, and top 1% account for 15% of GHG emissions. (See https://www.oxfam.org/en/press-releases/carbon-emissions-ric...)