You wake up to a dark, dreary, glum-feeling, Monday-type of morning. For the 547th consecutive day. Just 18 months prior, you were a hard-working farmer gearing up for another bountiful crop season. But then the skies went dark. And they stayed dark -- day after day, month after month -- from early 536 to 537. Across much of eastern Europe and throughout Asia, spring turned into summer and fall gave way to winter without a day of sunshine. Like a blackout curtain over the sun, millions of people