I'm in the rocky desert, and I just built a tractor. I started driving the tractor in an effort to get to coal.
I headed off in a north-easterly direction. All of a sudden I started taking damage to my health for no apparent reason. I wasn't in a green poison cloud, and I wasn't being attacked by a spider, and I didn't see any radiation indication. It is very frustrating, and I was wondering if someone could give me a hint as to what was happening here. Thanks.