The Final Word on Cloud Seeding?

India's making a big, expensive stab at determining once-and-for-all whether man can make it rain. (No, not in the figurative sense.) Color us a little skeptical; we've always thought that positive cloud-seeding results were often due more to luck than the effects of sprinkled silver iodide. (For the umpteenth time, people, correlation is not causation.) And this recent Scientific American interview with an American cloud-seeding expert doesn't do much to allay our suspicions. Note the man's cau