Globe and Mail: In the village of Pujar in the Himalayas, the burans — a species of rhododendron — flowers each spring. And the tradition in Pujar, since time immemorial, is that no one picks and eats the flowers until after the spring Shiva festival. To do otherwise is to risk the anger of the gods, explains Himal Behan, who farms near the foot of the glacier. "But this year, the tree flowered in December. Even people who are 80 or 90 years old in my village say they have never known this to …