New Delhi, Nov. 30 -- That the India Meteorological Department (IMD) is far from reliable in predicting rain is well-known. Why this inaccuracy exists is something more perplexing. A recent paper by two environmental economists suggests that there are both non-material and material factors behind IMD's weather struggles: existing weather models find it hard to simulate tropical weather and the lack of comparable infrastructure with richer countries adds to this disadvantage. P4...