It is not obvious why selection should favor menopause or the continued survival of individuals that can no longer reproduce. The famous Grandmother Hypothesis had been used to explain the evolutionary significance of menopause. A new study conducted on the Ngogo chimpanzees community of wild chimpanzees in Uganda challenges this hypothesis. Science 27 Oct 2023 Vol 382, Issue 6669 DOI: 10.1126/science.add547
It’s funny to think to what extent researchers have to go to gather data. I will draw your attention to a journal article I came across recently. I am linking to my post as well as the article itself. I think you will find it interesting. It’s called “hydrodynamics of defecation” published in Soft Matter.
The article: https://pubs.rsc.org/en/content/articlelanding/2017/sm/c6sm02795d#!divCitation
The post: https://literature.cafe/post/3089296