Global warming appears to have shifted into a faster gear. After removing the effects of El Niño, volcanic eruptions, and solar cycles, researchers found that the planet has warmed at roughly 0.35°C per decade over the past ten years, compared with just under 0.2°C per decade from 1970 to 2015. The acceleration, which becomes visible around 2013 to 2015, appeared across five major global temperature datasets with more than 98% statistical certainty.
It’s both. There are trillions of cattle producing an enormous quantity of feces every day that produce enormous quantities of methane, which is a far worse greenhouse gas than carbon dioxide per gram
AFAIK there’s actually less than a billion cattle
https://www.statista.com/statistics/263979/global-cattle-population-since-1990/
1.5 Billion worldwide.