If a third of Pakistan is underwater, a hell of a lot more than Half million would be affected. Simple math the population of Pakistan is 230 odd million. Divided by 3 a third equals. Around what 76 million. Not half a million. I sure it is affecting a few more, but come on. This has happened before. Not quite to those population extents. Pakistan have been rapidly populating. 2000 the population was a 154 million. Yea what went wrong. I wonder. It isn't the weather either.