Walking along the Tech Green, you are likely to see squirrels, birds, and the occasional chipmunk scurrying along among passing students. These small critters seem to be thriving in urban environments across the world, but are these the same animals you would see if you took a walk in the same spot 200 or even 2,000 years ago?
source https://phys.org/news/2021-01-uncover-unequal-effects-human-mammals.html
