Personally, I've accepted our apocalyptic doom, and decided to increase my carbon footprint as much as possible. Some people just want to watch the world burn. Literally.
The effects we're feeling in the South US are mostly from the La Nina[1], but there is actually something interesting happening with the Arctic ice this winter. It's still below zero up there, but we might end up with a northern channel in about 4 years if it stays this warm. It isn't just about the ice that has formed, but the speed that it's forming. It's significantly slower than recent years[2]. This was caused in part from storms[3], so now the rapidly warming temperatures can cascade in the next years with darker water and thinner ice. Also, the methane crater explosions in Sibera can't be helping...[4]
It appears that some people knew the Earth was spherical as early as 6 BC. Specifically in Greek culture. However, the Bible describes the Earth as being surrounded by a Firmament. This is used in the flat-Earth model to describe a stone-like covering which has literal holes opening to let light through.
This is strange considering all of the reworks that the bible went through even up until the 400's. It seems like if it were something widely accepted by scholars or even laymen that it would have been something to correct. You can see regional differences in the bible as it was being written and spread across the middle East, but the knowledge of the spherical Earth must not have spread quickly enough to this area in which copies of the bible were being made.
For example, missile guidance.