PREMIERE: Part 1 of 2. This two-part nonfiction miniseries, the latest from Ken Burns and company, is another evocative, surprisingly instructive, almost astoundingly relevant look at the past. This time, it’s about the environmental catastrophe that ravaged the Great Plains in the previous century – and why mankind, not nature, was at fault. For a full review, see David Sicilia’s TV Moneyland. Concludes Monday. Check local listings.