According to some sources, as of January 2021, around 1% of the world's population followed a vegan diet. This is expected to increase to around 10% by 2031, if the current trend is anything to go by. One of the trends driving this is animal activism, but the largest trend, by far as it would appear, is climate activism.
The climate is changing, and much of this is due to agriculture, or so many climate-change activists believe. Livestock agriculture, in particular, is to blame for increasing levels of methane in the atmosphere, causing global warming as a result of climate change, according to these activists.
Kurzgesagt, an animation and design studio founded by Philipp Dettmer, for example, posted a video on YouTube about how it takes 25kg of grain to produce only 1kg
