agriculture

I know that some sort of anthropogenic climate disaster destroyed the agriculture of a region of the United States, but what sort of disaster was it? Did it have something to do with erosion or deforestation or both and thus could've been avoided?

The challenge, with any POD since the establishment of the first sedentary human agricultural settlements there (i.r.o. 7000 BCE in the Wahgi Valley, more than 1000 years before the establishment of comparable agricultural settlements on Jomon-era Honshu), is to come up with a plausible...

The qanat was an ancient Persian technology to collect subterranean water by building a sequence of channels starting (underground) in the mountains and sloping down into irrigated farmland. It is actually still used today in Iran. This technology spread to Armenia and Kurdistan, but as far as...

So, it is a common wisdom that medieval agriculture and medieval agricultural technology were much more advanced than ancient Roman agriculture. Because I'm not a specialist of the matter, I asked you weather and how the medieval agriculture was superior to the ancient one? Had they better...

Since I am reading Jared's Lands of Red and Gold again and I was thinking about native transport and distances in that TL, a simple thought had suddenly occured to me : WI, in an ATL, some marsupial species had evolved into a sufficiently horse-like or camelid-like creature ? Simply put, into...