I was watching a PBS program on. . . possibly fossils, but it was all over the map on topics (I googled it an I think it is called Making North America). Anyway, they were examining marine fossils in Kansas, so the narrator who had been deep sea diving looking at bacteria in an earlier segment was describing with nice graphics how oceans and seas came and went, rose and receded over millions of years across North America. In the next program he'll probably be telling us that humans, especially American capitalists with global investments, are to blame for climate change.